Posts Tagged ‘Crosman M4-177 air rifle’
Crosman 2100B multi-pump air rifle: Part 3
by B.B. Pelletier

Crosman’s 2100B is a full-sized multi-pump that hopefully delivers power and accuracy with a few economic concessions.
Blog reader J was alert and noticed that I had not yet done the accuracy test of the Crosman 2100B multi-pump. I was astonished to find that he was right, so today we’re going to look at it. But before we do, I want to show you something I did at the range last week. Some of you who have been reading for a long time will remember that over a year ago I was suffering from eye problems. It turns out that my diabetes had dehydrated me so much that my eyesight was affected. And it took a long time for the situation to correct itself. I wondered if I would ever be able to shoot with open sights again.
This past Thursday, I was out at the range testing several firearms and airguns and a friend of mine happened to bring his Remington RangeMaster model 37 .22 rimfire target rifle for me to try. The model 37 was Remington’s equivalent to Winchester’s model 52 target rifle until the model 40X was created, and it (the model 37) has the reputation of being incredibly accurate. My friend can no longer use open sights and is scoping all the rifles he intends to keep. But this one is a rifle he has owned for decades but never shot. It still has the factory non-optical target sights.
The Lyman 17A front globe has a post-and-bead like target shooters used back in the 1930s and earlier. You put the post at the 6 o’clock spot on the bull. With good eyes, this kind of sight is considered second only to a properly sized aperture front sight out to 200 yards, and world records have been set with it. But notice I said, “With good eyes.”
I shot it at 50 yards with Winchester Super-X high-speed ammo, which is hardly target ammo! When I saw the group made with five shots I was ecstatic, because it proves that I can still see good enough to use open sights. I stopped at only five shots because who wants to ruin a group like that? However, after an involved trade with my friend, I ensured many more years of shooting this 37, and eventually I will shoot 10-shot groups. That’s important for today’s report, because the Crosman 2100B has a square post-and-notch sight, and the front has a bright green fiberoptic bead.

Five shots in 0.30 inches at 50 yards with open sights! The old man can still see! Sorry about the over-exposure.
Next, I tried my custom .17 HM2 that this same friend made for me on a Mossberg 44 US action. This rifle has a Leapers scope, so there’s an even better chance of hitting the target. This time, five shots went into 0.266 inches at the same 50 yards. I was on fire! Unfortunately, I haven’t yet mounted the scope on the FWB 300S, so I didn’t have that to test, but everything I shot that day went where I wanted. Since I couldn’t see the group through my scope, I knew it was a small one. And, once again, I chickened out after 5 shots. If I were reporting on the guns and shooting for the record, I would have shot 10 shots with each gun.

Five shots in 0.266 inches at 50 yards with a scope. Not that much better than open sights. It looks better because the .17-caliber bullet is smaller, but the actual size of the group isn’t that much less than the first group.
On to today’s test
I decided to begin shooting pellets with the 2100 at 10 meters. That way, if the rifle proved somewhat inaccurate, I could still keep them inside the trap. The 2100 has a .177 rifled barrel, so pellets should be more accurate than the steel BBs it also shoots. Since this is a Crosman rifle, what better to begin than with 7.9-grain Crosman Premier 7.9-grain domes?
The first thing I did was oil the pump head with several drops of Crosman Pellgunoil. I did that for the velocity test, as well; but since it’s impossible to overdo this step and it does ensure the best compression, I did it again.
I decided on 5 pumps for this test because the velocity test showed that was enough to get all pellets into the 500 f.p.s. range. At 10 meters, that’s all you need for good results. So, this test was very easy on me.
A new way of loading
Many owners may already have discovered what I am about to share; but while I was shooting the Premiers, I discovered a foolproof way of loading them. The loading port on the side of the rifle is too small for most adult fingers, and until now I’ve found it difficult to load the pellet so the head points forward. But during this test, I accidentally discovered that I could drop in a pellet in any attitude and simply elevate the muzzle of the rifle with the receiver rotated to the left so the loading port is angled up. The pellet would then try to right itself at the bottom of the loading channel; and, if it wasn’t aligned, all I had to do was push it forward slightly with the cocking handle and then pull the handle back and the pellet would align itself every time. I tried this with the JSB Exact RS pellets, as well, but they got stuck and didn’t align as easily as the Premier lites. I can’t wait to try this method on my old Crosman 2200.
Sights are okay, but not great
I found the sights easy to acquire and very sharp and crisp, but the method of adjustment leaves a lot to chance. I never did get the group shooting where I wanted it. Also, though I elevated the rear sight nearly all the way, it was still just hitting at the point of aim at 10 meters. Forget about shooting longer distances unless you learn how to hold the front post above the top of the rear notch. But the sights are not important, because this will not be the last test of this rifle. Just like the M4-177 rifle I tested last year, I found the 2100B was far more accurate than the price indicated! In a word, it was phenomenal — which is why I told you about the state of my eyes in the beginning of the report.

Ten Crosman Premier lites went into this 10-meter group that measures 0.539 inches. This is fantastic accuracy for an inexpensive multi-pump with fiberoptic sights.
Next, I tried the JSB Exact RS pellet. I was expecting to see a similar group, which is why what I got surprised me so much.

Ten JSB Exact RS pellets made this huge 10-meter group that measures 1.05 inches. This is obviously not the pellet for this 2100!
What a difference! Crosman could use this as an ad testimonial for Premiers, if they wanted. We all know that the JSB Exact RS is a premium pellet; but in this rifle, the Premier lite is the clear and obvious choice. I already demonstrated that my eyes are up to the task, so there’s nothing to blame in this case but the pellet.
BBs next
After testing two pellet brands, I switched to Crosman Copperhead BBs and fired 10 from a standing supported position at 22 feet. If the group was small, I would then try other brands of BBs, but as you will see that wasn’t necessary.

Ten Crosman Copperhead BBs went into this 2.219-inch group at 22 feet. This demonstrated that it wasn’t worth pursuing BBs any further. My photo inadvertently cropped off a BB hole on the right of the group. It’s on the 5-ring, as it ends on the right margin.
The results
This rifle is deadly accurate with Crosman Premiers and not very good with BBs. I wouldn’t even bother with BBs in the 2100 anymore because I have a host of BB pistols that will out-shoot it. But with Premier lives, it’s a different story.
The 2100B has earned the right to a special 25-yard test with a scope sight. That will come in Part 4, and I charge blog reader J with making sure I don’t forget to do it!
From the greatest to the least
by B.B. Pelletier
I was in Wal-Mart the other day and a guy was looking at the airguns, so I struck up a conversation. He was looking at a Crosman M4-177 for eliminating pest birds; and when I tried to steer him toward a more powerful breakbarrel in .22 caliber, he had a fit over the price. Apparently $145 is the Rolls Royce of airguns for him!
So, today I thought I’d reflect a bit on the cost of things — some expensive and some cheap, but all very good. We have a growing contingent of firearms shooters who have found this blog and I’m doing this for them.
The most expensive?
Well, let’s be realistic. There’s only one air rifle that was carried by Lewis & Clark, and Dr. Beeman has donated it to the U.S. Army War College museum. It’s value is well over a million dollars; but since there’s only one, it doesn’t really count in today’s discussion.
I’m also not talking about the collectible airguns that are available in greater numbers. A complete Plymouth Iron Windmill BB gun, the predecessor to the Daisy line, has commanded as much as $10,000. But second model Daisys are even rarer, because they were so prone to break. I’ve seen one change hands for $16,000, and that was close to a decade ago. But, for today, I want to talk about guns that are generally available.
Whiscombes
When Edith and I bought our JW75 with four barrels and the Harmonic Optimized Tuning System (HOTS) on each of them, the cost was $2,100. That was in 1996. The cost did increase after that; but when John Whiscombe stopped making his rifle several years ago, the price took off like a rocket. Today, it’s hard to find a single-barrel Whiscombe rifle with no frills for under $3,000, and full sets like ours will certainly bring a lot more.

You can’t buy a new Whiscombe rifle anymore, so used rifles command top dollar.
So, are Whiscombes the most expensive air rifles? Hardly. There are all sorts of custom airgun makers around the world who offer almost whatever the traffic will bear. I’ve seen single rifles in Europe priced at over $8,000, and that was five years ago. Who knows where it all ends? The point is, air rifles can cost a bundle if that’s what you’re looking for.
Back to earth, some of the more expensive production air rifles today are made by the target rifle companies, where top models retail for nearly $3,000. And they’re built for a specific purpose — not for general shooting. The FWB 700 Alu, for example, is a very expensive air rifle that cannot be used for most popular airgun pursuits like hunting and plinking. But for punching holes in paper, it’s one of the best. The same can be said for top target rifles from Steyr, Walther, Anschütz and a couple others.

The FWB 700 Alu looks like an expensive air rifle!
For the sport of field target, it’s difficult to top the Air Arms EV2 precharged competition rifle. It has won and placed at the world level many times in recent years and is one of those rifles shooters tend to covet.

The Air Arms EV2 has won its share of top honors in field target.
In sporting rifles, Daystate and FX Airguns are among the most expensive brands. And now their top models are around $2,000 or less. Fifteen years ago, the number of makers of these rifles was much greater, but many brands have left the market.
Do you have to spend so much?
Of course you don’t! There are plenty of fine air rifles that cost considerably less than those mentioned and still deliver a boatload of options and value. But that isn’t today’s topic. We’re looking at the most expensive and the least expensive.
How low can you go?
Speaking of the least expensive, what can you get for very little money? How about a Beeman P17 pistol? For under $50, Pyramyd Air will sell you an air pistol that’s so accurate you cannot outshoot it — I don’t care who you are. This is a pistol that you can learn on and use to take your handgun shooting to the next level. For the life of me, I cannot fathom why Beeman doesn’t triple the price and bring this out as a pseudo-10-meter target pistol! All the foundation is there. Gamo did the same thing with their Compact pistol, and this one costs one-fifth as much! They could easily add target grips and sights and have a wonderful, inexpensive target pistol, but I guess they just don’t see the potential.

For the money, you can’t buy a better air pistol than the Beeman P17.
I wish I had an air rifle to list for under $100. They exist, but none of them are what I would call really exemplary. But the Air Venturi Bronco is the finest low-cost air rifle I know of. It has accuracy equal to or better than a Beeman R7, a great trigger, nice size and is generally a fine rifle for older youth and adults.

Air Venturi’s Bronco is the air rifle to beat on the low end of the price spectrum.
The bottom line
And now you’ve guessed my agenda with this report. It wasn’t just about the most expensive and the least expensive. The guns I listed are also among the best of their types in the world. Sure, I could compare the Benjamin Marauder to some of the expensive PCPs and make a case for it being just as good functionally, but that wasn’t what this report was about. It was to define the limits of cost in our hobby for all the new readers who come over from the world of firearms.
Crosman 2100B multi-pump air rifle: Part 2
by B.B. Pelletier

Crosman’s 2100B is a full-sized, multi-pump that hopefully delivers power and accuracy with a few economic concessions.
Today, we’ll look at the velocity of the Crosman 2100B multi-pump, and a strange thing occurred during the test. Actually it was two strange things — one an amazing coincidence and the other just weird. Both relate to oiling the gun, and both will be informative.
First, the coincidence. As I was writing this blog (last week, because I’m in Las Vegas at the SHOT Show this week), I got a question from a reader whose 2100 wasn’t pumping air. I asked him if he had oiled the pump piston head like he was supposed to, and I directed him to the online owner’s manual that tells how to do it and to a blog I wrote years ago that tells the same thing. A couple hours later, I get a thank you message that he’s oiled the gun and it seems to be holding air.
So, there I am in my office pumping the gun and shooting it for velocity and I ask myself about the state of the pump piston head of the particular gun I’m testing. Sure, it’s brand-new, but that doesn’t mean that it has enough oil. I look, and the pump head appears to be dry. For those who wonder what I’m talking about, please read the manual.
Then, I recalled that someone had guessed that this rifle would shoot in the low 600s with lead pellets, because someone he knew had tested it. Lo and behold, it was shooting only about 622 f.p.s. on 10 pumps (which is the maximum) with Crosman Premier 7.9-grain pellets. Wow! He was right!
But, wait! The pump head was dry, so I oiled it with some Gamo oil for CO2 guns. The velocity jumped to 658 f.p.s. with the same pellets and 10 pumps. But after about 10 shots the velocity started declining again.
So, I oiled the pump head again — this time with Crosman Pellgunoil. The velocity jumped to 690 f.p.s. before sliding backward to the 620s.
What did I learn?
First, I re-learned for the umpteenth time how important it is to oil a multi-pump gun. That was all it took to fix the reader’s rifle! Second, I saw that the test 2100 rifle responds to oiling immediately, but falls off again almost as fast.
So, the published velocity of 725 f.p.s. can probably be achieved with real-world lead pellets for a brief time, but this test gun won’t hold that velocity very long. Maybe the material the pump head is made of needs a break-in period? I don’t know. What I do know is that I can change the velocity of this gun by 70 f.p.s. simply by oiling it.
It doesn’t end there, however. While that story was unfolding I was also experimenting with the speed of my pump strokes. Since the pump head seemed somewhat hard, I figured that faster pump strokes would build more pressure. And they did! I could increase the velocity by 10 f.p.s. at least, just by changing the speed at which I pumped. I’ve tried the same thing in the past with other multi-pumps, but this one is particularly sensitive.
I think the most representative method of testing this rifle for velocity is to let it sink back to its lowest velocity and stabilize there. That way, the velocity test will also represent the velocity at which the accuracy test is conducted, because I’m certainly not going to oil the pump head after each and every group! Undoubtedly, there’s sufficient oil in the gun right now because of the two oilings I mentioned.
Crosman Premiers
The first pellet tested was the 7.9-grain Crosman Premier. Since the 2100 is a multi-pump, I decided to test each pellet and BB at 5 pumps and 10. That gives us a good picture of what the gun can do across the entire range.
On 5 pumps, Premier lites averaged 540 f.p.s. when the gun was pumped fast. They ranged from 537 to 543; and at that velocity, they produced 5.12 foot-pounds On 10 pumps, again with rapid pump strokes, this pellet averaged 630 f.p.s. The range went from 628 to 635 f.p.s., and the average muzzle velocity was 6.96 foot-pounds.
JSB Exact 8.4-grain dome
Next I tried the 8.4-grain JSB Exact dome. On 5 fast pumps they averaged 526 f.p.s., with a spread from 517 to 531 f.p.s. The muzzle energy averaged 5.16 foot-pounds. On 10 pumps, they averaged 608 f.p.s. with a spread from 595 to 611 f.p.s. The average muzzle energy was 6.9 foot-pounds.
JSB Exact RS
For a light pellet, I tested the JSB Exact RS. The name of this pellet includes the word Match, but they’re domes, not wadcutters, and cannot be used in formal match shooting. At 7.33 grains, they’re very light, yet I’ve had some good luck with them in other pellet rifles.
In the 2100, 5 pumps gave an average 559 f.p.s. The spread went from 555 to 563 f.p.s. The average energy was 5.09 foot-pounds. On 10 pumps, the average velocity was 646 f.p.s., and the range went from 635 to 654 f.p.s. At the average velocity, the muzzle energy was 6.79 foot-pounds.
So, the reader who said the 2100 wouldn’t get to 700 f.p.s. was right. As long as you don’t shoot it immediately after oiling with Pellgnoil, it won’t shoot that fast. But oil it, and it’ll probably top 700 f.p.s. with lighter pellets.
On to BBs
BBs were next, and with them things are much more standard. Though there are subtle differences in BB brands, they don’t vary as much as pellets. We’ll now see if the advertised velocity of 755 f.p.s is reasonable. Since this is a Crosman gun, I tested it with Crosman Copperhead BBs.
BBs are loaded into the large reservoir, then the gun is shaken and they fall into the smaller spring-loaded magazine. Once the magazine is empty, you can shoot pellets again, even though there BBs are still in the big reservoir; if they aren’t in the magazine, they won’t load automatically.
On 5 pumps, Copperheads averaged 570 f.p.s. They ranged from 564 to 578 f.p.s. At the average velocity, they generated 3.68 foot-pounds of energy at the muzzle. On 10 pumps, they averaged 678 f.p.s. and ranged from 672 to 682 f.p.s. That’s an average muzzle energy of 5.21 foot-pounds.
So the bottom line is that the test gun doesn’t meet its advertised spec for velocity. It falls at least 73 f.p.s. short. It does the same with lead pellets, so I’m withdrawing my remark that the gun is suitable for light hunting. Clearly, it’s below the safe margin. Yes, it will kill small animals, but I could not recommend it for that task based on these results.
I also note that the barrel is starting to loosen at the breech. It rotates slightly at this point, and I’ll keep an eye on it. And the pump lever hits the gun with a loud slap on every pump stroke — there’s no cushioning material to deaden the sound.
I hope these results don’t disturb owners of this gun, because they in no way condemn it. The accuracy test is still to come, and we might get a big surprise there.
Crosman’s new M4-177 multi-pump air rifle: Part 4
by B.B. Pelletier
As you read this, I’m at the SHOT Show in Las Vegas. I’ll be there all week. In fact, today is Media Day, where the media gets to go to an outdoor shooting range in Boulder City and shoot the guns displayed by manufacturers, importers and distributors. Since I won’t be monitoring comments much of this week, I would appreciate it if our regular readers would help answer them. Edith will still monitor all the comments but may not have a chance to answer many more than she already does.

Crosman’s new M4-177 is a smart-looking M4 battle rifle lookalike.
How many of you remember that I said I would come back to the Crosman M4-177 multi-pump air rifle and test it at longer range with a dot sight? Well, if everything went right, Mac and I are out at the range in Las Vegas at the SHOT Show Media Day today, but while we are seeing and shooting all the new guns you guys get one more look at this one.
As I mentioned in the last report, I mounted a dot sight on the rifle, to see how it performs at longer distance. I picked the 25-yard indoor range for this one. For the sight, I selected the BSA Optics red/green/blue dot sight that also has a laser and a tactical flashlight. It certainly looks right at home on this rifle, and the Weaver clamp fits the rifle’s Picatinny base. All I had to do was remove the open sights, front and rear, and put this one on the base.
The problem with optical sights on a multi-pump rifle is they get in the way of holding the gun during pumping. I had to hold the M4 at the buttstock extension tube because the sight sat right where I wanted to put my hand. Because of that, pumping was more difficult, and I wanted to pump the rifle 10 times per shot. So, I decided to shoot 5-shot groups until I found an accurate pellet, then shoot 10 shots with that one.
Accuracy testing
As I said, all testing was done at 25 yards off a rest. The rifle was pumped 10 times for every shot. Pay no attention to where the groups land, as I adjusted the sights several times to keep the pellets on the target.
I first tried the Crosman Premier Super Match pellet that had worked so well at 10 meters in Part 3. Once it was on target, I shot a group of 5 to see how they did. Unfortunately, at 25 yards, they didn’t do as well as I’d hoped. The group measures approximately 3.01 inches, but that’s not precise because the widest pellet didn’t land entirely on target. Suffice to say it was poor enough to disregard.

Crosman Super Match wadcutters didn’t give the performance I wanted.
I continued on, testing RWS Hobby pellets. They were better, with 5 going into 1.563 inches but not what I was looking for.
Next came 5 JSB Exact 8.4-grain domes. This was the first domed pellet I tried, and the group size shrank to 1.406 inches. The group was also very vertical, however, which leads me to an important point.

JSB Exact 8.4-grain domes did better.
By this point in the test, I noticed that this dot sight is not precise. The dot smears in all three colors at all three intensities. I’ve used quality dot sights that held the size of their dots very well, but with this one the dot smeared to the sides. I tried it both with my glasses and without, and the results were always the same. Maybe it’s me and not the sight, but I felt I wasn’t able to aim precisely enough with this sight.
The last pellet I tried was the Crosman Premier 7.9-grain dome. This one gave me 4 very tight shots, with No. 5 landing several inches away. Now, I had a quandary. Should I go with the JSBs or the Premier lites?

Four of five Premier lites made this tight group, but there’s that lone shot up to the left. What to do?
I decided to go with the Premiers, because of the tighter group of 4. So, I shot 10 more Premier lites at 25 yards.

And this is what I got. This “group” is pretty poor, and I don’t believe it represents what the M4 can do. It measures 3.358 inches between centers.
What now?
Well, I had been unhappy with the performance of the dot sight to this point. What if I replaced it with the original factory sights — a peep rear and a post front? Hey! Haven’t I read somewhere on the internet that those kind of sights can do a good job?
The dot sight came off and the factory sights went back on. It took 4 shots to sight in, and then I shot another 10-shot group. This time, the pumping was much easier because my hands could hold the rifle in the right places.

And that’s the same rifle, same pellet with factory peep sights. This group measures 1.546 inches between centers, with 8 of the 10 shots going into 0.923 inches. Clearly, the factory sights were better in this case.
Bottom line
Well, I’ve wrung out the M4-177 pretty thoroughly. It’s accurate and fun to shoot, and for my money you can use the sights that come with it. I know that the look of the gun begs for tactical accessories; but for me, accuracy is always the trump.


















