Posts Tagged ‘PCPs’
by Tom Gaylord, a.k.a. B.B. Pelletier
Let’s look at the Walther 1250 Dominator accuracy at 25 yards. In deference to the 8-shot clip, I’m shooting 8-shot groups rather than 10. The way this rifle loads, with the clip almost disappearing in the receiver, it’s too difficult to keep track of those 2 extra shots.
I’ll be honest — I stalled testing this gun in the house because of the noise. It’s one of the loudest airguns I’ve ever shot indoors.
I said last time that I would give you a shot count once I filled the rifle to 4,350 psi (300 bar). Well, that didn’t happen. I filled it as far as my freshly filled carbon fiber tank would go, but that was only to 4,200 psi on the tank’s gauge, which seems pretty accurate. The rifle’s gauge showed a lower fill pressure, but I chalk that up to small pressure gauges never agreeing.
I didn’t get a complete shot count. I did, however, fire about 40 shots in the test and still had air remaining for at least another 15. If you can get the gun completely filled, there have to be at least 55 full-power shots available. Probably more, but at least 55.
I mounted an AirForce Airguns 4-16X50 scope on the rifle in a BKL 1-piece cantilever mount. The scope was low over the receiver, even though the BKL mount is a high one; but because the circular clip is entirely contained within the receiver, there was no interference.
I shot from a sandbag rest at 25 yards off an MTM Case-Gard Predator shooting table. In a moment that will become important to know.
I sighted the rifle in and started shooting with the H&N Baracuda Match pellet. It was accurate enough, but I felt the rifle could do better. Eight shots went into a group measuring 0.597 inches between centers.
The Baracuda Match pellets didn’t give me what I wanted, so I switched to 10.34-grain JSB Exact Heavy domes. They started out doing better than the Baracudas and produced a 0.522-inch 8-shot group. But two pellets strayed from the main group. I called the one that went to the left, but not the other one that went high. So, as good as this pellet is, it isn’t the best pellet in this rifle.
Then, I tried RWS Superdomes — a pellet that many of you favor over just about all others in .177 caliber. And this is where I had an epiphany with this rifle. The first 8-shot group measured 0.461 inches, but it was full of wild shots that went off when I wasn’t on target. That was both the fault of the trigger and the rifle’s light weight. I’ll address it in a moment. But this target told me that this rifle could shoot much better if I really tried.
The Walther 1250 Dominator is a very light rifle, and the trigger isn’t that light. As a result, the gun moves more than a little as the trigger is squeezed. This can be overcome by paying extreme attention to detail on each shot, but it’s something I normally don’t need to do when shooting an accurate PCP.
That’s why I mentioned the shooting table and sandbag rest. Normally, such things are an absolute lock for the guns, but this time the rifle is so light that it still moves around too much. You’re only going to solve that with technique.
The next group was shot with as much concentration as if I were using the artillery hold. And the payoff is a 0.404-inch 8-shot group. That represents the best I can do with this rifle and pellet at 25 yards.
The bolt is hard to cock and sticks when pushing it forward to load the pellet. It isn’t much of a hinderance, but you do notice it. I did discover that if the bolt is worked fast and with authority, it does become smooth. So, the rifle likes to be treated like an SMLE.
Opinions thus far
I found things to criticize on the Walther Dominator 1250. No. 1 is the need to fill it to 300 bar. That’s just too much pressure, and it uses all the air I can get. The rifle is very loud, and I’m no longer used to pneumatic air rifles being so loud. The trigger is too heavy and long, and the rifle needs to weigh at least 2.50-3.00 more lbs. to be stable. However, all that pales when we look at the accuracy.
This is an accurate air rifle — make no mistake. Today’s test was at 25 yards, so it’ll be very interesting to see what happens when we move to 50 yards.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, I’ll report the velocities I got with the new AirForce Condor SS rifle with Spin-Loc tank, as well as the shot count per fill and some other interesting things. Yesterday, I spent some time informing you of how the baffled silencer system works in this rifle. Today, that becomes important to understand.
Before we begin, let me clear up some things. Blog reader RidgeRunner thought the reservoir of the Condor SS looked smaller in the photo than the old reservoirs on the other two rifles. It isn’t. It is exactly the same size. The foam that surrounds the tank has changed, and that might give the illusion that new tank is shorter, but that’s just an illusion.
Blog reader Bob from Oz asked for a diagram that shows the flow of air because he was confused by my textual description. That’s where the photo of the silencer parts comes in. The end of the barrel, the true muzzle, is buried deep inside the frame of the rifle. The frame is tubular in front, and many people might think that it looks like a bull barrel, but it’s actually a hollow tube that has an inside diameter of one inch. The baffles fit inside that hollow tube exactly as shown in the photo, except that they are touching each other when they’re installed, so they’re not spread out like they appear in the photo.
When the pellet and compressed air exits the muzzle of the barrel (deep inside the tubular frame of the gun), it passes through the first baffle and much of the air is stripped off. It passes through the open slot of the baffle and is deflected backwards by the wide flange of the next baffle. Then, it passes back through the holes in the front barrel bushing and into the open space between the barrel and frame behind the front bushing.
As the pellet passes through each baffle more of the compressed air gets stripped off and reflected backwards. This all happens in miliseconds and the air is still under pressure, so it eventually comes out the end cap of the rifle.
Why am I telling you this?
You have to understand how this works, or nothing I say will make much sense. The key to quietness is the volume of empty space inside the frame of the gun and the length of time it takes the compressed air to exit the gun. You don’t notice anything, of course. You shoot and hear the report at the instant of firing. But there really is a small lag time, during which the compressed air expands and loses its energy. That energy is what makes the noise, so the greater the expansion, the less noise there is. And the less compressed air that’s used with the shot, the lower the noise will be when everything else remains the same.
I told you this because, when I began testing the Condor SS for velocity, I was surprised by the noise. I was testing inside my office, which is 12 by 15 feet, and the last time I heard the rifle was outdoors back in November of last year. I knew this gun I was testing was louder than what I’d heard back then. So, I went to AirForce yesterday and we conducted some tests to determine where the production Condor SS is sound-wise. I’ll get to that after we look at the velocity, so let’s do that right now.
Like all the sporting precharged rifles AirForce makes, the Condor SS has adjustable power and interchangable barrels. There’s no way I can test every possible combination of pellets, calibers and power settings, so I selected spots in the power spectrum that I’ll report today. I will report each pellet at all the power settings and give you the shot count for each one.
Eun Jin domes
The first pellet I tested was the Eun Jin 28.4-grain dome. While there are heavier pellets that will generate greater power in .22 caliber, I believe this one will do well in the accuracy test, so it’s a reasonable top-end pellet to test. On the maximum power setting, this pellet averaged 892 f.p.s. I shot it 20 times and the high (shot 3) was 912 f.p.s. The low (shot 20) was 814 f.p.s. Yes, that is a 98 f.p.s. spread; but out to about 35 yards, this pellet will hold zero for those 20 shots. If you plan on shooting at 50 yards and farther, stop at around 10 shots. Your average then climbs into the low 900s and the max spread is less than 30 f.p.s. At the average velocity for the 20 shots, this pellet generates 50.19 foot-pounds of energy at the muzzle.
The power band is more or less a straight declining number from start to finish. Starting at 3,000 psi, you finish at 2,200 psi. A Hill pump then takes about 100 strokes to fill the tank again. So, there are 5 pump strokes per shot on max power.
The rifle was very loud, so I told Edith to change the sound rating in the description to a 4 because this gun is louder than a Sheridan Blue Streak on 8 pumps. It’s quieter than a Condor running at the same power, but still loud enough to notice. In fact, when I was testing the velocity in my office (with the door closed), Edith was in the living room and thought I was shooting a Quackenbush big bore because it was so loud.
Now, let’s look at the performance of the same pellet at different power settings.
On power setting 10, there were 20 total shots at an average of about 878 f.p.s. (48.63 foot-pounds).
On power setting 6, there were 22 shots at an average 868 f.p.s. (47.52 foot-pounds).
On power setting 4, there were 23 shots at an average 858 f.p.s. (46.44 foot-pounds).
On power setting 2, there were 25 shots at an average 830 f.p.s. (43.45 foot-pounds)
The power spreads from the first shot to the last were closing up as the power was dialed down; but even at setting 2, there was still 80 f.p.s. variation, start to finish. The beginning and ending air pressure was always the same for each string. Even on the lowest power the rifle sounded just as loud.
Then, I tried the Crosman Premier pellet that weighs 14.3 grains. The Condor was the first air rifle to get this pellet supersonic in .22 caliber. In the Condor SS, the average on high power was 1076 f.p.s. It ranged from a low of 1029 f.p.s. to a high of 1117 f.p.s., so, once again, a large spread. At the average velocity, this pellet generates 36.77 foot-pounds of energy at the muzzle. And there were the same 20 shots per fill, with the same starting and ending air pressures. There was no noticeable difference in the report between this pellet and the Eun Jin.
On power setting 10, there were 20 shots at an average of about 1067 f.p.s. (36.16 foot-pounds).
On power setting 6, there were 22 shots at an average 1062 f.p.s. (35.82 foot-pounds).
On power setting 4, there were 23 shots at an average 1033 f.p.s. (33.89 foot-pounds).
On power setting 2, there were 25 shots at an average 1010 f.p.s. (33.70 foot-pounds)
As with the heavy pellets, the power spreads were closing up as the power declined; but even at setting 2, they were still 60 f.p.s. from start to finish. The beginning and ending air pressure was always the same for each string. Even on the lowest power, the rifle sounded just as loud.
JSB Exact Heavys
Next, I tried the 18.1-grain JSB Exact Heavys. I expect this pellet to be matched well to the power of this new rifle. On maximum power, they averaged 1004 f.p.s., which generates 40.52 foot-pounds of muzzle energy. The high was 1059 f.p.s., and shot 20 was 962 f.p.s. I still got 20 shots per fill, and the muzzle report was identical to the others.
On power setting 10, there were 20 shots at an average of about 988 f.p.s. (39.24 foot-pounds).
On power setting 6, there were 22 shots at an average 981 f.p.s. (38.69 foot-pounds).
On power setting 4, there were 23 shots at an average 970 f.p.s. (37.82 foot-pounds).
On power setting 2, there were 25 shots at an average 966 f.p.s. (37.51 foot-pounds)
Notice that these pellets seemed to do very well on the lower power settings. That is important because the shot count increases with very little loss of power. The total velocity spread on setting 2 was 69 f.p.s. I think this may be the best pellet for this rifle, but accuracy testing will have to prove it.
The last pellet I tested was the Beeman Kodiak that weighs 21.1 grains in .22 caliber. Many will select this pellet for a powerful rifle like the Condor SS. On the maximum power setting, these pellets averaged 970 f.p.s. The high was 1017 f.p.s. The low was 908 f.p.s. Like the other 3 pellets tested, a large velocity spread over the 20 shots; but as I pointed out before, out to 35 yards it won’t make much difference. At the average velocity, this pellet generated 44.09 foot-pounds of energy at the muzzle.
On power setting 10, there were 20 shots at an average of about 965 f.p.s. (43.64 foot-pounds).
On power setting 6, there were 22 shots at an average 952 f.p.s. (42.47 foot-pounds).
On power setting 4, there were 23 shots at an average 936 f.p.s. (41.06 foot-pounds).
On power setting 2, there were 25 shots at an average 920 f.p.s. (39.67 foot-pounds)
Summary of power performance
The Condor SS I’m testing seems to work best at power setting between 4 and 10, with the lower setting being better. The shot count increases, and the velocity spread gets a little tighter, plus not much power is lost. Let’s keep that in mind, and I’ll get back to it in a moment.
Sound testing at AirForce
I took my rifle out to AirForce Airguns and tested it against a production gun, another gun that had a pre-production prototype barrel and a .22-caliber Benjamin Marauder. I had said in Part 1 of this report that the Condor SS set on maximum power was no louder than the Benjamin Marauder when I saw it shoot last November. The one I now have for testing certainly seems to be louder.
We shot outdoors but next to the steel building, so there was some sound reflection from the building walls. Clearly, my Condor SS is just as loud as the current production gun, and both are louder than the Benjamin Marauder dialed up to its maximum power. But here’s the difference. The Benjamin Marauder shot Beeman Kodiaks between 801 f.p.s. and 828 f.p.s., and both Condor SS rifles shot the same pellet at an average 920 f.p.s. when set on power setting 2. So the Condor SS is putting out about 40 foot-pounds when dialed down low, and the Marauder is putting out around 30 foot-pounds with the same pellet when it’s adjusted as high as it will go. That’s a big difference.
So, why was the Condor SS I had heard back in November so much quieter than this one? Well, for starters, back then the baffles had smaller holes through them. Now, they’re able to safely handle calibers .20 through .25; but back then, they were still experimenting with the hole size. Also, the barrel in my test rifle is 16mm diameter. The prototype rifle had used a 12mm diameter barrel; so AirForce installed a 12mm diameter barrel in their production rifle that we tested yesterday, and the sound went down a little. The 12mm barrels are being processed now for production.
Then, we installed a standard SS tank on the Condor SS that now had the 12mm barrel and dialed the power down to 838 f.p.s. with the Beeman Kodiak pellets. That was as low as we were able to go when the 3,000 psi fill was fresh. Now, the Condor SS was only a little louder than the Marauder that was shooting just a little slower. We shot them side by side several times to make sure. There’s a difference you can discern when testing side by side, but outdoors it isn’t that great.
Remember, this is shooting outside but close to a building, and the standard tank is being used instead of the High-Flo tank that comes with the rifle. You can buy a standard tank as an accessory, but they aren’t going to sell one with the rifle instead of the High-Flo tank, so don’t even ask!
As far as the Spin-Loc tanks are concerned, they’re the new design. Pyramyd Air has opted to phase out the version with the old-syle quick-detach tank and stock only the versions with the Spin-Loc tank. The quick-detach tank that screws in is also available as an accessory in both the standard and High-Flo configurations.
Observations so far
Wow! This has to be one of the longest reports I’ve ever written. And the first part of it was yesterday, in Part 3. I hope this addresses your concerns about this rifle, and that you now clearly understand what you’ll receive when you order a Condor SS. It’s quiet for the power it generates, but it’s not whisper quiet like I originally said.
There’s still so much ground to cover with this test rifle. Accuracy testing comes next at 25 yards and then 50 yards. And after that, I’ll install a standard tank and do today’s test again. Stay tuned!
by Tom Gaylord, a.k.a. B.B. Pelletier
This report is going to be a long one! There is so much to tell about the AirForce Condor SS rifle with Spin-Loc tank that I can’t pack it into the usual 3-part report. But today I’m going to start the velocity report and I’ll finish it tomorrow. I’m doing it that way because there are so many things to see and talk about before I get to the velocity test, plus the velocity test revealed some interesting things. And, since today is Wednesday, I really do mean that the second part of this report will come tomorrow.
A longer frame
Let’s start with a question that was asked by several people. What differentiates the Condor SS from the standard Condor? I told you about the barrel length differences (standard Condor = 24-inch barrel; Condor SS = 18-inch barrel) and the different frame lengths (the Condor SS has a longer frame than the Condor so it can hold the baffles), but several people asked me to show it. And I did promise to do that when I first reported on the new rifle, so here you go.
Here you can see the Condor SS (top) has the longer frame to hold the baffles. Under it is the Condor and then the Talon SS on the bottom. Note that both those rifles frames are the same length. The Condor end cap is slightly longer than the Talon SS end cap, so it looks longer,
Inside the frame — the technology
This is what you have been waiting to see. The Condor SS has 3 Delrin baffles, held tight between a bolt and a Belleville washer, so there’s no rattling of parts. The baffles fit close inside the frame, which AirForce reams for precision. That’s the only way this can be done because a raw extrusion will have a certain amount of size variation.
But there’s more than just the baffles. The front barrel bushing has air holes that allow the compressed air that’s reflected by the baffles to pass through.
The front barrel bushing has holes that allow the compressed air to pass through — giving more room for it to expand inside the frame. That robs the air of its energy and lowers the report at the muzzle.
And the changes don’t even stop there. The rear barrel bushing now has an o-ring around its circumference to help stabilize the barrel inside the frame without transmitting any sound. When you change barrels now, you’re going to have to push the barrel out of the frame instead of it dropping out like it did previously.
I’m going to discuss the sound of the rifle tomorrow, but there are several technical things you need to know before we get to that, so we’ll look at those today. First, there’s the size of the hole through the baffles. The pellet needs room to pass through the baffle without touching the side as it goes through. The larger the hole through the baffle, the less risky it is…but the more compressed air can also pass through and the less quiet the gun will be.
Remember that all AirForce sporting rifles allow you to change barrels, so the baffles have to accommodate all calibers. Or, in this case, the largest 3 calibers — .20, .22 and .25. The .177-caliber Condor SS has its own baffles that cannot be used on the larger calibers.
Then, there’s the power the gun generates. The more power you are dealing with, the greater the volume of compressed air that has to be quieted. Reduce the power, and the sound also goes down.
That’s all for today. Tomorrow, I’ll give specific velocities with different pellets, shot count and pressure curves. I’ll also discuss a strategy for using this rifle in the most effective way, as I believe I’ve discovered that for you. After that, but not tomorrow, we’ll advance to accuracy testing at 25 and 50 yards.
But that will not complete this report. After I wrap up this test of the factory rifle, I’ll install a standard Talon SS tank and run more velocity and accuracy tests. That will probably complete what I’ve planned. I could easily go on and run tests with a Micro Meter tank, a CO2 tank and so on, but I think what I have planned will give all of us a good look at this remarkable new air rifle.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, I’ll start testing the new AirForce Condor SS rifle with Spin-Loc tank. I’ve been waiting a long time for this test, because it affords us the opportunity to look at so many new things from AirForce Airguns. Not only will we get to see the new baffled silencer system, we’ll also get another look at the new trigger and safety on which I reported back in January. I linked to that report, above, and labeled it as Part 1 so you can get a better look at the new trigger by reviewing it, though I’ll continue to make comments on the trigger as this report unfolds. We’ll also get a look at the new Spin-Loc tank that allows filling without removing the tank from the gun. There’s a lot of ground to cover, so let’s begin.
The rifle I’m testing is in .22 caliber, which I believe is the best caliber for all AirForce rifles. I won’t give the serial number because this rifle is mine. It’s not going anywhere after this report is completed. Don’t worry — they’ll make more!
What is the Condor SS?
AirForce Airguns is an American manufacturer based in Fort Worth, Texas. They make all the parts of their guns except for the barrels, which they source from Lothar Walther, the air tanks on many of the sporting models and the synthetic parts. Although shrouded barrels are commonplace in 2013, it was AirForce that introduced them to the market back in 2001 with their Talon SS.
In 2004, they started production of the Condor, one of the most powerful smallbore air rifles the world has ever seen, and one that still gets more shots per fill than any of its competition. Generating 65 foot-pounds of energy in .22-caliber, the Condor is a pellet rifle whose muzzle energy equals the standard speed .22 short rimfire cartridge. Only the diabolo design (wasp waist and hollow, flared tail) of the pellets it shoots prevents it from shooting as far as the rimfire. The Condor gave airgunners a rifle with .22 rimfire power and reasonable downrange safety at the same time.
These are all precharged pneumatic (PCP) airguns. Their butt reservoirs are filled to 3,000 psi (nominally — each gun may be a little different) and fired until they fall off the power curve at lower pressure. A Condor will get up to 20 powerful shots on a fill, and a Talon SS will get around 35-40 shots.
Shooters liked the SS for its quiet operation. When it was new, the SS was one of the quietest airguns in town that was also legal to own because it doesn’t have a silencer that can be installed on a firearm. And the Condor that can shoot a pellet through one and a half 2×4 boards delighted folks with power they’d only dreamed about. But the Condor was noisy, and the SS produced only about 25 foot-pounds of muzzle energy in .22 caliber. People wondered why AirForce couldn’t do both things — power without the noise.
The rifle we’re looking at in this report combines much of the power of the Condor along with the quiet of the SS. In fact, this rifle is even quieter than an SS. It’s as quiet as SS owners wish their guns were.
And, in response to customer requests, AirForce now offers the Spin-Loc tank that remains attached to the rifle, once installed. It has to, because it sports an onboard pressure gauge — a manometer — that customers also said they wanted. I’ll grant that this gauge is a handy thing since it lets you know the state of the fill the moment you grab the rifle. That’s very convenient when you pick it up after the gun hasn’t been used awhile. There’s no need to guess at the charge — it’s right there on the gauge. It was always easy to count your shots before; but when you set aside the gun for many days, you might not remember where it was in the fill. Of course, you could always top it off before shooting, which is what shooters did before the gauge; but now they don’t have to. The gauge tells them if there’s still enough air.
The Spin-Loc tank has to be installed with tools that come with the rifle. An Allen wrench loosens the single locking screw that allows the threaded bushing in the frame to turn freely. That bushing will join the tank to the frame. Don’t remove the locking screw — just loosen it so the threaded bushing can turn freely. A toothed wrench or spanner that comes with the gun can then turn the bushing to tighten it onto the tank. The tank itself cannot be turned much because neither the pressure gauge nor the male Foster fill nipple will clear the frame. So, the bushing has to be tightened onto the tank’s threads — drawing it onto the frame.
I have to say that it took me a couple tries before I got the tank threading straight onto the bushing. It’s a problem of controlling both the gun and the tank, so the tank’s threads do not start cross-threading. Both the bushing and the tank’s threads are steel, though, so the risk of damaging the threads is low. Just work carefully; and once the threads start to join, everything goes together easily.
Once the tank was on the gun, I adjusted the pull length by adjusting where the buttpad clamps to the rear of the tank. I noticed that the buttpad can also be flipped upside down, allowing it to extend lower for more contact with the shoulder, so I did that, too. In the end, I have the rifle set up for a 14-1/2-inch pull, which is ideal for me, and the buttpad is canted inward at the toe, which is how all my AirForce rifles are set up. There are several inches of adjustment with this pad, so fitting an adult shouldn’t be a problem. The picture at the top of this report shows the buttpad reversed like this.
New trigger and safety
I covered the new trigger and safety thoroughly in Part 1, but it’s new so I’ll mention it here. The trigger is 2-stage and not adjustable. I’ll give you the pull weight and critical data in the velocity test, which comes next, but we do know that it’s very crisp and stops after the sear is released.
The biggest difference in this trigger is that it cannot be uncocked. The gun, once cocked, must be fired. Since the Spin-Loc tank cannot be easily removed, the question becomes: Can you release the trigger without opening the valve? As it turns out, you can. Simply move the bolt a little forward so it isn’t pressed against the valve (which is referred to as the top hat), hold it there with your thumb and pull the trigger. Your thumb will catch the striker before it opens the valve very far, limiting the amount of air the gun fires. As convenient as this is, I would only do it with an unloaded (no pellet in the breech) gun that’s pointed in a direction that would be safe to fire. Because if you misjudge where the bolt has to stop, the gun could still fire a pellet.
The Condor SS comes with an 18-inch Lothar Walther barrel in your choice of calibers (from .177 through .25). Naturally, you can change the barrels as with all other AirForce sporting rifles, so you can own all 4 calibers for a fraction of what 4 complete guns would cost.
Ahead of the barrel is the system of baffles that make the SS what it is. I’ll show those in the next report, but there’s something that nobody has mentioned, yet. This rifle will also accept a tank with a standard valve; and if you use one of those, you’ll get twice the number of shots as you get from the Hi-Flo tank that comes standard on the Condor. And because of the 18-inch barrel, the gun will also be more powerful than a stock Talon SS. So, you’ll have great power and lots of shots! This is so intriguing that I’ll test it for you after I complete the full test of this gun as it comes from the factory.
Like all AirForce sporting rifles, this new one also has adjustable power. We’ll experiment with that when we test the rifle for velocity.
The Condor SS is made of aluminum, steel and some soft synthetic parts such as the grips and forearm. It has very straight lines, and the buttpad that drops down plus the raised scope rail make it quite easy to adapt to scope use. The accuracy is legendary, and we’ll put that to the test at multiple distances.
I’ve waited a long time to test this gun for you. So, sit back and enjoy this — it’s going to be a long ride.
by Tom Gaylord, a.k.a. B.B. Pelletier
Thank you for being so patient with me on this Walther 1250 Dominator report. I had to suspend it while I was back in Maryland; but now that I’m home, I can start up again. Today is velocity/power day, so we’ll learn a lot about this air rifle.
Filling with air
To fill the reservoir, you first remove it from the rifle by unscrewing. Then, it’s screwed onto a brass adapter that’s screwed into a 300-bar DIN hole on a carbon fiber tank or scuba tank valve.
You fill the reservoir up to 300 bar, or 4,351 psi. The only way to get that much pressure is to use either a carbon fiber tank or to connect the reservoir directly to an air compressor or hand pump that goes that high. My carbon fiber tank was holding less than 3,000 psi when I conducted this test, but fortunately the rifle has a broad power band. Even though I can’t fill the reservoir all the way, the gauge on the tank still reads in the green. I’ll get fewer shots, but they will be at the same velocity. It’s just like a car that goes no faster when its gas tank is full or nearly empty.
However, I cannot give you a shot count in this report because I’m not filling the reservoir all the way. That will have to come later.
As an observation, I would use the Air Venturi female DIN adapter with this reservoir, so I could use either a hand pump or carbon fiber tank to fill the reservoir.
Trigger and safety
The two-stage trigger is adjustable for the length of the first stage. You can even adjust it out, and have a single-stage trigger. The adjustment doesn’t alter the force required to release the sear in stage two. On the test rifle, that broke at 2 lbs., 8 oz. with stage one taking 6 of those ounces.
Stage two has a definite feel of the pull through to it. It’s not creepy, in the sense that it stops and starts, but is rather a smooth pull-through that can actually be felt. It’s not bad — just not glass-rod crisp.
The safety is automatic on cocking, but it’s designed to go off easily with a downward swipe of the thumb. After several shots, I found myself not even thinking of it.
This rifle will have those with sensitive ears running for their hearing protection. There’s no attempt to muffle the discharge, so you hear the full effect of the power. It’s not as loud as a .22 rimfire; but if you shoot indoors, I can imagine shooters using that as a description.
It’s fully as loud as any other pneumatic of its power class when no attempt is made to attenuate the discharge sound. Thirty years ago it would have sounded normal; but in this day of shrouded barrels, it stands out.
This Walther is rated to 28 joules, which is just a bit more than 20.6 foot-pounds. There’s no mistaking the spec, for it’s written on the right side of the receiver. That is a lot of power for a .177 pellet rifle to generate, and of course you’ll need heavy pellets to achieve it. So that was where I started the test — with Beeman Kodiak Match 10.65-grain pellets. To achieve 20.6 foot-pounds (28 joules), this pellet needs to exit the muzzle at about 933 feet per second, according to Pyramyd Air’s energy calculator.
But the average velocity I recorded for this pellet was 968 f.p.s., which works out to 22.16 foot-pounds or 30.05 joules. So, the rifle is more powerful than advertised. The average velocity went from a low of 965 to a high of 972 f.p.s., which is a tight 7 foot-second spread.
Next, I tried the popular RWS Superdome pellet. It averaged 1005 f.p.s. from the test rifle, with a spread from 998 to 1013 f.p.s. That’s a 15 foot-second spread, and the energy generated is 18.62 foot-pounds at the muzzle. As you can see, that’s a big drop-off from what the heavier Kodiak Match pellets generated. Precharged pneumatics often generate their best energy with the heaviest pellets they can manage, so this comes as no surprise. However, it will only be after we see the accuracy of these test pellets and perhaps some others that we will select an optimum pellet for the rifle.
H&N Match Pistol
As a final pellet I selected the lightweight H&N Match Pistol pellet. I wanted to test two things here. First, how would the rifle handle lighter pellets; and second, would the magazine handle wadcutters smoothly. It actually did feed these pellets smoother than both of the domes, so that part of the test was a success.
The average velocity was 1018 f.p.s. with a spread from 1016 to 1020 f.p.s. That was the tightest velocity spread of all — just 4 feet per second. The average energy for this 7.56-grain pellet was 17.40 foot-pounds at the muzzle, so another power decrease came with this lighter pellet.
Reliability and pellet feeding
Any time I test a repeater, I always wonder if the gun will feed pellets smoothly and how the magazine…or in this case the clip…will handle the pellets. There are no concerns with the 1250 Dominator, though; because the pellets go into the clip easily, they stay in well and the clip goes into and comes out of the receiver with great ease. The bolt sometimes hangs up on the forward stroke, but that’s due to the newness of the gun — not a pellet feeding problem. I believe it’ll go away as the action is broken in.
The clip is long enough to accept the Beeman Kodiak, which is a long pellet, so I have no problem with it. And it feeds wadcutters well, so pellet shape is not a problem, either.
Observations thus far
The Walther 1250 Dominator is certainly a different PCP. It has a lot of synthetics and a different shape than is thought to be conventional, but it holds very well — hanging muzzle-heavy. The profile may appear different, but it holds like a rifleman’s gun. I can’t wait to see it shoot!
by Tom Gaylord, a.k.a. B.B. Pelletier
“A poor man’s PCP!” That’s what “they” said about the Hämmerli 850 AirMagnum CO2 repeater. It has many of the features shooters were looking for — repeatability, accuracy and a huge number of shots from the 88-gram CO2 cartridge it used. So they called it a poor man’s PCP; and before long, someone converted one from CO2 to air. They liked it that way, and a boutique industry was born.
But Walther, who makes the Hämmerli 850, was paying attention. If people wanted the rifle to use compressed air, they could build the gun that way from the start. The result — today’s test report on the Walther 1250 Dominator.
The 1250 Dominator is a bolt-action, 8-shot precharged pneumatic (PCP) repeater. It comes in either .177 or .22 caliber, and I’m testing a .177. The rifle uses a rotary clip to hold the pellets. To remove or install the clip, the bolt is cocked, then the clip retainer is pushed back, and a clip can be installed or removed from the left side of the receiver, only. The owner’s manual calls the clip both a magazine and a drum, interchangeably; but because there’s no spring-assist, it’s just a clip to hold the pellets. One notable feature that differs from almost all other rifles having rotary clips is that the top of this clip lies below the plane of the receiver, allowing one-piece scope rings to be used.
I am testing rifle serial number GO39547. It is all black, with matte metal finish and a dark synthetic stock. The stock is hollow, but feels substantial. The butt is padded with a soft rubber pad that prevents the rifle from slipping.
This rifle operates on compressed air, only. Though it’s based on a CO2 rifle, it cannot use CO2 cartridges, nor does it operate on a bulk charge of CO2. The fill level for air is 300 bar (4,350 psi). Those with carbon fiber tanks or special hand pumps will be able to fill the rifle to capacity; but even if you can’t fill to that level, you can still use the rifle. You’ll just get fewer shots, but they’ll still be high-velocity. Does that model number 1250 tell you anything? Walther rates the rifle to 1,250 f.p.s., and we’ll soon see how this one preforms.
The rifle weighs 8.0 lbs. It feels muzzle-heavy when held with the off hand back by the triggerguard. The balance is very conducive to good shooting, and I think it’s going to help a lot.
The trigger is two-stage, and the length of the first stage is adjustable via a screw in front of the trigger blade. The trigger blade is wide plastic with a smooth face. It’s possible to uncock the rifle, but you have to catch the hammer with the bolt as it falls. The automatic safety must be pushed off, and the bolt cannot be all the way back or you can’t get the safety off, so there has to be a little standoff distance. That’s why the bolt has to catch the hammer as it falls.
You might wonder why you would want to uncock the gun, and there are several reasons. One is to test the trigger without discharging the gun. Another is when you wish to remove the clip without firing the rifle. But be careful; because, when you cock the rifle with a loaded clip installed, pushing the bolt forward will push a pellet into the breech! Do that more than one time, and you will double-load the rifle. So, that’s a third reason for wanting to uncock the gun — to remove the loaded clip after inadvertently loading one pellet, so only one pellet is in the barrel — the one the bolt just fed in.
The sights are open front and rear with fiberoptic inserts. Because this is a PCP, I won’t try the open sights in my testing; but if I did, I would light the target to defeat the fiberoptics because they’ll detract from a precise sight picture. The rear sight adjusts for elevation by sliding it up and down an inclined plane. The front sight adjusts for windage by drifting the sight sideways in its dovetail. Remember to move the front sight in the opposite direction than you want the strike of the round to move.
Of course, most owners will mount a scope on this rifle, which is what I plan to do. The 11mm dovetail rail is just over 6 inches long, which is big enough to handle any large scope on the market.
This is an outdoor air rifle, to be sure. Nothing is held back when it fires. It presents no problem for a person outdoors in a rural place, but you’ll need a large backyard if you don’t want to disturb your neighbors. It isn’t as loud as a .22 short cartridge, but it’ll seem very loud in this day of silenced PCPs.
The barrel is solid and free-floated from the receiver all the way out. That is important for accuracy because the removable reservoir underneath the barrel flexes as the pressure drops during firing.
Not for field target!
There is a rumor floating around that the 1250 Dominator is a good rifle for the sport of field target. Not so! In fact, it would not be legal to use such a powerful air rifle in a field target match. The confusion probably stems from the fact that years ago there was another Walther Dominator that was purpose-built as a field target rifle. That one was a converted Walther 10-meter target rifle whose power was increased to make it competitive. This one would have to be seriously detuned to be used. This is a hunting rifle — pure and simple.
Filling the reservoir
The reservoir is removed from the rifle for filling. And I’m so glad I got to test this gun because I twice discharged the whole fill before remembering how this type of valve works. The manual gives the correct instructions…but whoever reads the manual — until they lose two entire fills?
The trick is to shut off the tank and then unscrew the reservoir without bleeding it. Don’t use the tank’s bleed valve with the tank turned off because the reservoir inlet valve is held open mechanically when the reservoir is screwed in all the way to the fill adapter.
Speaking of the fill adapter, it’s a 300-bar DIN adapter, so you have to have something to screw it into. I was able to screw it directly into my carbon fiber tank valve, but you may not have a 300-bar DIN connection. If you don’t, buy one from Pyramyd Air. The Air Venturi Female DIN Adapter allows you to connect a female Foster quick-disconnect adapter, which many hand pumps come with these days, to the Walther 1250 Dominator fill adapter.
Well, that’s about it for the overview. It’s an interesting PCP; but to hold its own, it’s up against some tough competition. It will all come down to two things — the trigger and, of course, accuracy. And that’s what we’ll evaluate in the tests to come.
by Tom Gaylord, a.k.a. B.B. Pelletier
Let’s begin testing the effects of oiling pellets. There are numerous ways to approach this issue, and I have to pick one at a time and limit the test to just that. But I think as long as I’m testing one aspect, I ought to test it thoroughly so someone can’t come back and second-guess me later in the report.
So, today I’ll test with one rifle, and the next time I’ll test with another. What I won’t do is test with each different brand of airgun, just to see what will happen. If a powerful gas spring rifle performs in a certain way, I’ll assume that all powerful gas spring rifles are going to do the same. If the difference between dry pellets and oiled pellets is close, I may do additional testing; but if there’s clear separation, I’ll accept that as the way it works.
What am I testing?
The question that started this experiment was, “How much faster will oiled pellets shoot than those that are not oiled?” One reader has asked me to also test this downrange because he wonders if a thin coat of oil changes the laminar flow of air around a pellet. I may get to that at some point, but for the present I’m just concerned with muzzle velocity because all pellets slow down after they exit the muzzle — oiled or not.
I suppose this needs to be tested in all three powerplant types, but today I’m testing it in a spring-piston powerplant. Today’s gun is a weak powerplant, so next time I’ll test it in a more powerful gun.
I’m using an HW55 SF target rifle to test three pellets. This rifle is a variation of the old HW50 rifle, so it shoots in the 600-650 f.p.s. region with lead pellets.
Since oiled pellets will leave a film in the bore, I tested all pellets dry first, and then tested the oiled pellets afterwards. Before the first test shot with oiled pellets, I fired two pellets to condition the bore. That turned out not to be enough, but I’ll come to that later.
I’ll test the three major pellet shapes in this test. They’re the wadcutter, dome and pointed head. There are other shapes, like hollowpoints, but they’re based on one of these three main shapes, so this is all I’m testing.
How I oil pellets
I oil pellets in the following manner. A foam liner is placed in the bottom of a pellet tin, and 20 drops of Whiscombe Honey are dropped onto the foam. Then, a single layer of pellets is spread on the foam, and the tin is rolled around. I shake the tin lightly to move the pellets around…but not enough to damage them. Whatever oil transfers to the pellet is all the oil it gets. I’ve been doing this for many years and it works well.
The pellets end up with a very light and uniform coat of oil. When I handle them the tips of my fingers become oily, but I can’t see any oil on the pellets. Other people use more oil than I do, but this is what I am testing.
Whiscombe Honey is a mixture of two-thirds Hoppes Gun Oil (not Number 9 bore cleaner!) and one-third STP Engine Treatment, by volume. Shake the mixture until is takes on a light yellow color. It will look like thin honey, hence the name. This mixture should not detonate easily in a spring gun.
Test one — dry pellets
Crosman Premier 7.9-grain pellets were the domes I tested. The average velocity for dry Premiers was 606 f.p.s., with a low of 577 and a high of 616. So, the spread was 39 f.p.s. The average muzzle energy was 6.44 foot-pounds.
For wadcutters, I tested Gamo Match pellets. The average for dry pellets was 652 f.p.s., with a low of 640 and a high of 663 f.p.s. The spread was 17 f.p.s. The average energy was 7.14 foot-pounds.
H&N Neue Spitzkugel
The pointed pellet I selected was the H&N Neue Spitzgugel. When shot dry, they averaged 601 f.p.s., with a low of 585 and a high of 620 f.p.s. The spread was 34 f.p.s. The average muzzle energy was 6.81 foot-pounds at the muzzle.
Now, I shot two oiled pellets through the bore to condition it and began the test.
Oiled Crosman Premiers
Oiled 7.9-grain Premiers averaged 591 f.p.s., but the spread went from a low of 545 to a high of 612 f.p.s. That’s a spread of 67 .p.s. The average energy for oiled pellets was 6.13 foot-pounds. I did notice the pellets were going faster at the end of the shot string, so I thought I might come back to them after testing the other pellets.
Oiled Gamo Match pellets
The oiled wadcutters averaged 658 f.p.s. — a slight gain over the dry pellets. But the real news was the spread, which went from a low of 651 to a high of 663 f.p.s. Instead of a 17 f.p.s. for the dry pellets, the oiled pellets gave a spread of just 12 f.p.s. That’s too close to draw any conclusions, but it’s interesting. The average energy with the oiled pellets was 7.27 foot-pounds. So, with the oiled pellets, the velocity went up — along with the energy — and the shot-to-shot variance went down.
Oiled H&N Neue Spitzkugel
Oiled Spitzkugels averaged 609 f.p.s. — which was a small increase over the same pellet when dry. The average energy was 6.99 foot-pounds. The spread went from 585 to 620 f.p.s, which was identical for the same pellet dry. Velocity and energy were both up slightly from dry pellets, and the shot-to-shot variance remained the same.
By now, it’s obvious that the bore needed more than two shots to condition it, so I retested the oiled Crosman Premiers. The second time the oiled pellets averaged 604 f.p.s., which is just 2 f.p.s. slower than the same pellets dry. But the spread that was 67 f.p.s. on the first test of oiled pellets and 39 f.p.s. with dry Premiers now went from a low of 594 to a high of 613 f.p.s. — a much tighter 19 f.p.s. total. The average energy was 6.40 foot-pounds.
From this test, I observed that these three pellets either remained at the same velocity or increased very slightly from the light oiling I gave them. In two of the three cases, the velocity spread got tighter when the pellets were oiled.
I further observed that it’s necessary to condition a bore with oiled pellets before doing any testing. As a minimum, I would say that 20 oiled pellets should be fired before testing.
These are very small differences from oiling; and although I can’t draw any conclusions yet, I would think that such a small change is not enough to matter. It hardly seems worth doing at this point. However, there’s still a test to be done in a powerful airgun. Until we see those results, I think it’s too soon to say anything for sure.
Although the question that drove this test was how much faster oiling pellets makes them shoot, I think we still have to take accuracy into account before forming any opinions.
And now for something completely different
Pyramyd Air is looking for a manager for their tech department. If you’re interested in the position, below is the job info and where to send your resume.
Directs and coordinates activities of the department in providing customers technical services and support; directly supervises employees. Responsibilities include but are not limited to:
Coordinates technical support services between management, tech support staff, sales department, and customers.
Establishes and documents department procedures and objectives.
Accomplishes department objectives by selecting, orienting, training, assigning, coaching, counseling, and disciplining employees; communicating job expectations; and monitoring performance.
Maintains and improves support operations by monitoring staff and system performance, identifying and resolving problems, and preparing and completing action plans
Provides technical assistance to customers and labor quotes. Handles escalated calls or provides assistance requiring more complex issues.
Installs common accessories and kits in accordance with customer orders.
Performs tests on guns to determine advertised performance specifications.
Required experience, skills and background:
Bachelor’s degree and 3 years managerial experience, or an equivalent combination of education and experience required. Previous industry experience required.
Must be detail-oriented with good mechanical aptitude.
Ability to prioritize and multi-task.
Good communication and customer service skills.
Good computer skills.
Hours: Monday through Friday, 9am until 5:30pm; longer hours and some Saturdays are expected, especially during our busy peak periods.
Preferred experience, skills and background:
Previous experience in airgun repair or troubleshooting desired.
Send your resume to firstname.lastname@example.org