Posts Tagged ‘Crosman Pellgunoil’
by Tom Gaylord, a.k.a. B.B. Pelletier
Let’s look at the velocity of the Tanfolglio Gold Custom CO2 blowback airsoft kit gun. When I started the test, I discovered something unusual. The CO2 cartridge I’d loaded last week to test the gun initially had leaked down completely. That usually doesn’t happen until several months have passed, so it got me wondering. I’ll watch the gun and see if it happens again. I left the test today with a 75 percent filled cartridge; so if I test it again in a week and it’s out, I’ll know. And to answer your question, yes, I did use Crosman Pellgunoil on the tip of each fresh cartridge when I installed it.
Testing the velocity of an airsoft gun is a little different than testing a pellet gun. It’s more like testing a BB gun because the airsoft BBs come in specific weights. The velocities tend to conform to the weights rather than to the individual brands of BBs used. I’ll test the pistol today with the 4 most popular weights — 0.12 grams, 0.20 grams, 0.25 grams and 0.28 grams. And let’s get something straight right now. When we’re talking about airsoft BBs, we’re speaking in terms of GRAMS — not grains. There are about 454 grams in a pound, but 7,000 GRAINS per pound. So a gram is MUCH heavier than a grain. A gram is a decimal unit of the metric system. It’s one-thousandth of a kilogram. A grain is an apothecary (medical) weight from the old English system of weights — a system that is also used by jewelers. It was historically the weight of one barley seed, but has been standardized to one seven-thousandth of a pound.
Regardless of the weight of each BB, they’re all the same size. Their weight is controlled by the material used to make them.
UHC Precision Ground BBs, 0.12 grams
First up are 0.12-gram (1.85 grains) UHC BBs. They averaged 417 f.p.s. in the Tanfoglio pistol. The range went from a low of 406 to a high of 425 f.p.s. That’s slightly slower than the maximum advertised veloicity of 453 f.p.s for this pistol. At the average velocity they produce 0.71-foot-pounds of energy at the muzzle. Given the design goals of airsoft, that’s fine, because much more than that will start to injure anyone hit by them.
Air Venturi Pro CQBBs, 0.20 grams
Next up were Air Venturi Pro CQBBs 0.20-gram (3.09 grains) BBs. These are value-priced BBs that come in bottles of 2,700 rounds, 5,000 rounds and, for the serious shooter, supersized bags of 125,000!
These averaged 333 f.p.s. with a spread from 315 to 346 f.p.s. This is the recommended BB weight for this pistol, which means it will probably be the easiest one to tune the BAXS (the trajectory adjustment in the pistol) with. At the average velocity, this BB produced 0.76 foot-pounds of muzzle energy. I have other brands of 0.20-gram BBs, including competition BBs; so if this weight turns out to work well in the gun, I plan to give it the biggest test. As a final note, the velocity was right where the specs say it should be (320-350 f.p.s.).
Air Venturi Pro CQBBs, 0.25 grams
This 0.25-gram (3.86 grains) BB is a little heavier than the recommended weight, but sometimes that doesn’t hurt the accuracy at all. With the right BBs, it can enhance it — and this is where having several different brands of premium airsoft BBs is an advantage. I tested velocity with the Air Venturi Pro CQBBs 0.25-gram BB that’s the equivalent of the 0.20-gram BB mentioned above, but heavier. It comes packaged the same way, and I have the 2,700 BB bottle for the test.
These BBs averaged 296 f.p.s. in the Tanfoglio pistol. The range went from 282 to 304 f.p.s. At the average velocity, this BB produced 0.75 foot-pounds of muzzle energy.
TSD Tactical, 0.28 gram BBs
The last BB I tried was the TSD Tactical 0.28-gram (4.32 grains) BBs. These are clearly too heavy for this gun, but they did produce velocity very close to the 0.25-gram BBs. The average was 289 f.p.s., with a spread from 274 to 302 f.p.s. At the average velocity, this BB developed 0.80 foot-pounds of energy at the muzzle.
Loading the magazine
I don’t have a speedloader, so I loaded each BB one-by-one into the double-stack magazine. They have to be pressed through the top of the magazine, which then holds them against falling out while the gun is operating. That’s the sign of a quality airsoft gun. If you remove the loaded mag for any reason, a BB doesn’t fall out of the mag as it often does on lower-priced gas guns and most spring guns and auto-electric guns (AEGs).
I also note the BBs instantly arranged themselves within the mag…and without any fuss. With lesser guns, the BB stack will have gaps on one side that lead to misfeeds.
Stopping the BBs
Nothing rebounds worse than a plastic airsoft BB. Nothing! Those of you who know airsoft probably wonder how I managed to stop the BBs in the velocity tes. When I tell you that I stopped 100 percent of more than 60 BBs fired, you need to know how I did it! I used a UTG Accushot Pellet and BB trap, and in front of that I placed a heavy cardboard sheet at a slight angle of perhaps 15 degrees to the face of the trap. The trap and cardboard both stood in a shallow cardboard tray that caught all BBs that came back out of the trap. It worked so well that I will use it when I conduct the accuracy test.
I proclaimed how much I love the Tanfoglio trigger in Part 1. Now let me tell you the specs. It’s single-stage, with the blade moving through an arc that can be felt, and it breaks cleanly at 2 lbs., 9 oz., which is even lighter than the trigger on my Wilson Combat CQB 1911 firearm. This is a pistol trigger to die for! The only criticism is that it doesn’t break like a glass rod; but since the gun is for action shooting and not bullseye targets, that doesn’t matter.
I got exactly 40 shots before the gun began slowing down. After that, there were another 10 good shots before the blowback function came into question. I guess a lot of the CO2 is used for blowback. Since this is a competition gun, that makes no difference. Winners will buy it and use it, no matter what it takes to make it work. This is not a budget plinker. It’s a full-blown competition airgun!
I hope this pistol will be a real tackdriver because that would make it perfect. I know that it’s not a target gun, but it does have to place its shots in the same place to score high in the competitions it would enter. If it does — well, I don’t know that I will let it go back!
by Tom Gaylord, a.k.a. B.B. Pelletier
Umarex Fusion CO2 rifle
Today, we test the Umarex Fusion CO2 rifle for velocity and several other things you readers are interested in. You may remember that in the first part I had a problem with the rifle not sealing when I loaded the CO2 cartridges. Blog reader mikeiniowa nailed the problem with the Fusion CO2 cap. The part that contains the piercing pin was partially unscrewed and was, therefore, longer than it should be. It was piercing the cartridges before the o-ring was in position to seal the gun. So, a lot of gas leaked out; and, because the o-ring absorbs CO2 and swells when it does, it also prevented the cap from being screwed down tight.
I’m going to show that cap in detail in a later report. It’s made so complex because of the material the o-ring is made from. If a different material had been used, none of the complex parts would be needed…and the cap could be made for less cost.
So, with the cap assembled correctly, I was able to load 2 fresh CO2 cartridges. This time, everything worked as it should, and the velocity test began.
JSB Exact RS
The first pellet I tried was the 7.3-grain JSB Exact RS. This lightweight dome is a winner in many lower-powered air rifles, and I believe the Fusion will be one of them. The first shots started slow, at 619, 647 and 644 f.p.s. Then, the velocity jumped up to 663 and remained above that number for the remainder of the string. The average, once the velocity was in the curve, was 667 f.p.s. That means the Fusion’s valve needs to be awakened after installing fresh cartridges.
The low velocity, once the pellet had climbed into the stable spread, was 663 f.p.s., and the high was 673 f.p.s. At the average velocity, the RS pellet produced 7.21 foot-pounds of muzzle energy. Because the Fusion is a gas gun, we can expect the power to increase and decrease with the pellet weight.
I tested the same pellet several hours later, and the first JSB RS out the spout went 686 f.p.s., so the velocity had increased by 20 f.p.s. after 40 shots had been fired and the gun then rested for 3 hours. But that was also the end of the power curve. By shot 50, the velocity of all the pellets started to drop again.
The second pellet I tried was the 7-grain RWS Hobby wadcutter. They averaged 669 f.p.s. with a spread from 661 to 681 f.p.s. At the average velocity, this pellet generated 6.96 foot-pounds of energy at the muzzle. Lighter pellet, less energy.
Crosman SSP hollowpoints
The third pellet I tested was the Crosman SSP hollowpoint. Remember, Umarex lists the velocity of the Fusion at 750 f.p.s. with lead-free pellets (which they call alloy) and 700 f.p.s. with lead pellets. I should have tested the rifle with RWS HyperMAX since those are the ones Umarex imports and distributes, but I didn’t have any on hand. Anyway, the Crosman pellets worked fine. They gave an average 766 f.p.s. velocity, with a low of 757 and a high of 783 f.p.s. At the average velocity, this 4-grain pellet produced 5.21 foot-pounds of muzzle energy, so it’s staying on track for the pellet-weight-to-velocity relationship.
After 50 shots had been fired, the average velocity for this pellet fell to 711 f.p.s. So, the velocity is going down, but the velocity is still useable up to 60 shots.
The last pellet I tried was the 10.6-grain H&N Baracuda Match. In a spring gun, the velocity for this pellet would fall off quite a bit from the numbers for these lightweight pellets, but gas guns and pneumatics are different. Heavy pellets don’t lose nearly as much velocity as they do in spring guns. The average for Baracudas was 612 f.p.s. The range went from 600 to 616 f.p.s. At the average velocity, the Baracuda produced 8.82 foot-pounds, which is significantly higher than any other pellet.
One of our readers mentioned that the total number of good shots he gets is about 70 shots with each set of CO2 cartridges. I was looking for about that number. I noticed the velocity began dropping at shot 50. But there were still 10 more good shots in the gun. From shots 56 through 60, the velocity for the baseline JSB Exact RS pellets was 622, 614, 603, 602, and 584 f.p.s. While there were still more shots to be fired, I felt that accuracy would probably drop off at this point. So, I’ll rate the Fusion I’m testing as a 60-shot gun.
And, now, we come to the question on everyone’s mind. Is the Fusion quiet? Umarex not only says that it is, they tout the low sound level heavily in their advertising campaigns. While I don’t have any scientific sound measurement equipment to test with, I can make a fairly good subjective observation of the gun’s report. I compared it to my Diana model 23, which most of you readers know to be a very small, low-powered spring-piston youth model air gun. The Fusion and the Diana 23 are approximately the same loudness. That means that the Fusion is a very quiet air rifle.
Blog reader Matt61 wondered if it would be louder than a ballpoint pen falling on a thick carpet, and I must say that it is. But it isn’t much louder. I think this is a gun you could shoot in an apartment that has thin walls separating you from the neighbors. You should be able to shoot in even small backyards without disturbing the neighborhood.
I told you the trigger is 2-stage. Stage 1 is light and relatively short. Stage 2 is also light but long and creepy. The sear releases at around 3 lbs., 12 oz.
Besides the accuracy test, which is expected, I also want to take the gun out of its stock and look for both the power adjuster and the trigger adjustment that reader mikeiniowa mentioned. I’ll use that report to also show you the details of the CO2 cap and explain how it works so you understand what’s going on.
Given the power level of the Fusion, I think I’ll start testing accuracy at 10 meters and then back up to 25 yards. If the rifle comes through the accuracy portion with honors, I’ll give it a hearty recommendation.
by Tom Gaylord, a.k.a. B.B. Pelletier
One of the perks of visiting the manufacturer is getting to try new airguns. I visited Umarex USA last February to film my parts for this year’s American Airgunner show, and we were also given a tour of the facility in Fort Smith, Arkansas. We got to shoot many airguns and even a couple firearms, but the one gun that wasn’t quite ready was today’s subject gun, the .177-caliber Umarex Fusion CO2 rifle. Sales Director Justin Biddle (JB) told us the gun was going to be incredibly quiet. I really wanted to hear it perform, but it wasn’t going to happen because the gun just wasn’t ready.
Shouting about silence
Well, now I have a Fusion rifle in hand, and I get to test it all I want! I’m testing rifle number 00360129. Like all Fusions, this rifle comes in .177 caliber.
I told JB back in February that Pyramyd Air was very particular about the sound ratings shown with the descriptions on their website because, sometimes, they’re all a customer has to go by when buying an airgun. As the saying goes, “Once burned, twice shy,” so if there’s any question, no sound rating is accepted unless the Pyramyd Air tech team or I get to listen to the discharge of a production gun. We don’t want the customer who may be making his once-every-five-years purchase to be misled!
But I have to tell you — the box this rifle comes in touts the 5-chamber SilenceAir silencer attached to the barrel, and the rifle’s ultra-quiet operation is mentioned at least once on most of the box sides. They’ve gone so far as to put a video ad on the Pyramyd Air website, touting how quiet the rifle is. So, in all likelihood it is very quiet. Because, if it isn’t, it would open the door to a tidal wave of criticism! I’m prepared to be amazed.
There are other reasons for wanting to test the new Fusion, as well. It isn’t every day I get to see a new CO2 rifle. They don’t come along that often, and each new one seems different than the few we already have — unlike the introduction of yet another 1,400 f.p.s. breakbarrel magnum springer!
The rifle is a bolt-action single-shot, so in my mind that puts it in the Tech Force 78 category. Pyramyd Air no longer carries that model, and there are very few single-shot CO2 rifles to be had.
Even though the black stock is synthetic, the Fusion is not a featherweight. It weighs 5.71 lbs., which is certainly light enough, but it’s also enough weight to let you know there’s something in your hands. I would call this a handy rifle, in that sense. The dimensions are large enough for an adult (14-inch pull), yet the stock is also thin where you naturally grab it; so, think of this as the Diana 27 of CO2 rifles.
The rifle is just over 40 inches in length and balances with a slight bias toward the muzzle. The silencer is one inch in diameter and permanently attached to the rifle. The rifled steel barrel is a whisker over 17 inches long, and ends where the baffled silencer begins. It appears free-floated, but it does contact a barrel band that attaches it to the CO2 tube below.
The entire rifle is matte black. The stock is dull, and the barreled receiver is blued to a matte black sheen.
The bolt requires a fairly stiff pull to cock the action, so you’ll want the rifle against your shoulder or something firm when you shoot. A tray in the receiver accepts the pellet and helps guide it into the breech.
The buttstock has a very straight line — as opposed to a stock that drops at the comb. Therefore, it will accept a scope more readily than most rifles. The stock fits me very well. In fact, my off hand likes how the stock narrows just ahead of the triggerguard.
There are no open sights. The rifle comes with a 4×32 scope and rings; so, you do have sights, but they have to be mounted. I’ll cover that process in Part 3.
The trigger isn’t adjustable. It’s two stages with a long, light first stage and a long second stage that has some creep. The safety is automatic and comes on every time the rifle is cocked. It’s a sliding switch located on the top right side of triggerguard, just forward of the trigger. It can be applied and taken off at any time and appears to block the trigger from moving.
This rifle favors right-handed shooters. The stock is ambidextrous, but the bolt handle operates only on the right side of the receiver.
Charging the rifle
The Fusion needs two 12-gram CO2 cartridges each time it’s charged. They’re loaded end-to-end, similar to other CO2 rifles, but the charging mechanism isn’t as straightforward as you’re used to. There’s also a pressure-relief valve in the charging cap that lets you exhaust remaining pressure in the gun at the end of the useful charge. But that valve complicates the charging process just a bit.
To charge the gun, you first unscrew the cap that covers the pressure-relief valve control knob. Those threads are left-hand, so the cap comes off by screwing it clockwise. Then, the control knob is screwed down as far as it will go and then backed out three full turns. This closes the exhaust valve, making the CO2 reservoir cap ready for filling.
Use some kind of oil on the tip of each CO2 cartridge before dropping it into the rifle, and also spread some oil on the o-ring that seals the rifle’s cap. The instructions say to use RWS Chamber Lube; but since I had none of that, I used Crosman Pellgunoil.
The Fusion CO2 cap is more complex than the usual cap. The cap has been removed. The knob at the right is to exhaust the residual gas when it’s time to change the cartridges. It’s shown in the closed position, so the cap is gas-tight.
With both cartridges inside the tube, I screwed down the cap, and gas started hissing somewhere. I’m used to hearing a brief rush of gas, then the solid sound of the seal doing its job, so this hissing threw me for a loop. I played with the pressure-relief valve knob — unscrewing it farther. The hissing continued, so I screwed in the cap several more turns (against great resistance), and it finally stopped. That was the longest period of gas release I’ve ever heard from a CO2 gun during filling; so after shooting it several times, I exhausted the remaining gas and tried again with 2 fresh CO2 cartridges.
It happened the second time, too. Gas was exhausting for at least 30 seconds as I tried to tightly screw down the cap, but the cap got almost too tight to screw. This time, I knew the pressure-relief valve was closed; and I even opened and closed it during the procedure, just to make sure. I finally put my back into it and got the cap secured, but not before a lot of gas was lost.
I believe the problem is the o-ring on the cap is made of material that’s permeable to CO2 gas and swells rapidly in its presence. It swells enough when the gas is first released to make the cap difficult to screw in far enough to seal the chamber. We had problems like this with the old o-rings on CO2 guns years ago; but when the new non-porous o-ring material came to market, the problem stopped. This is something that needs to be looked at by the manufacturer. I will keep an eye on it as this test proceeds, and I’ll report my findings to you.
The box says to expect 750 f.p.s. with alloy (meaning lead-free) pellets and 700 f.p.s. with lead. I’ll try it with both, and I’ll try several lead pellets because this will be of interest to potential buyers. If it really gets that much velocity, this rifle could be used to eliminate small pests up to the size of small rats at close range.
Since I’ve shot the rifle already, I’ve heard the discharge sound. But I’m going to wait until the velocity test to report it. You can ask, but I won’t tell. Gotta save something for the later reports!
We don’t get a new CO2 rifle that often, so this one seems to hold a lot of promise. Velocity testing and a report on the report are next.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today’s report is a guest blog from reader Paul Hudson. It It’s his evaluation of the Crosman 622 repeater.
If you’d like to write a guest post for this blog, please email me.
Over to you, Paul.
The Crosman 622
by Paul Hudson
The Crosman 622 is a rarity — a slide-action CO2 repeater.
The Crosman 622 is a repeating slide-action CO2 pellet rifle. It was produced from 1972 to 1978 in .22 caliber only. It uses the familiar 12-gram Powerlets and has a rotary clip that holds six pellets.
There have been only a few other slide-action repeaters available in the recent past — the Gamo Extreme CO2 and the Shark roundball repeater made in Argentina are two examples. The Gamo uses an 88-gram cartridge, and the Shark is a bulk-fill gun.
This particular 622 belongs to my brother-in-law’s friend. It had not been fired for many years and was in need of a resealing. The old factory lube had turned to hard wax, and several hours of cleaning was required to get everything in working order.
Due to its design, the 622 did not develop a reputation for durability. The valve body is made of two parts held together with a single screw and is prone to breakage. A second bolt or pin can be added to the bottom of the valve body to greatly strengthen the assembly. Another problem was the tendency for the gun to jam with certain pellets; this can happen if the muzzle is elevated when the slide is cycled. Some pellets (depending on their shape) can back out of the clip enough to prevent it from rotating. Keeping the gun pointed down will help prevent this. Possibly due to this problem, Crosman added a lever to the receiver of later 622s to aid removing stuck clips.
There are many parts in the 622′s receiver. The large, rectangular casting on the right is the valve body, and it’s prone to breakage. The probe is near the top of the receiver and is in the rearmost operating position. In the middle is the rotating rod that advances the clip. The large cylinder on the bottom houses the striker.
The 622 is large enough not to feel like a toy. It’s 40.5 inches long with a 13.5-inch length-of-pull, so it’s adult-sized. The blued barrel is 23 inches long, and the gun weighs 6 lbs. without a scope. A square post front sight and a square notch rear sight come from the factory, and they’re entirely suitable for the ranges at which the gun would be used. The painted receiver is made of two die-cast pieces and is grooved for mounting a scope. While the paint isn’t the greatest finish, no complaints can be made about the blueing on the barrel and gas tube. It’s very well done for a low-priced gun. Both the stock and forearm are made of varnished hardwood that has a very straight grain. The receiver is only about an inch thick, and the gun does not feel bulky; combined with the light weight, it’s a perfect plinker and can be carried for hours.
The rear sight is a simple square notch and is adjustable for elevation and windage.
The front sight is a square post. The ramp is textured to prevent glare.
A manual safety is mounted behind the trigger; it’s very similar to the unit on many other Crosman models. The single-stage trigger was a pleasant surprise. It isn’t adjustable…but it’s fairly smooth, mostly creep-free and breaks at a consistent 2 lbs., 2 oz. For an inexpensive airgun, it’s quite good. Holding down the trigger while cycling the action lets the striker travel forward with the slide; it will not fire the gun.
The trigger features Crosman’s typical cross-bolt safety and is surprisingly good.
The rotary clip
The 622′s 6-shot rotary clip is easy to load and fits entirely within the receiver; it will not interfere with a scope or catch on anything during handling. Unfortunately, the clip accepts pellets with a max length of 0.275 inches. This prevents longer domed pellets and pointed pellets from being used. All wadcutters fit, and most cycle fine.
Rear view of the clip. Pellets load easily from this side.
The thin clip will not accept pellets over 0.275 inches long. The Baracuda Hunter is about the longest pellet that fits.
To charge the 622, the end cap of the lower tube is removed. A CO2 cylinder is dropped in nose-first (don’t forget a drop of Pellgunoil on the tip), and the end cap is replaced. As the cap is tightened, a slight hiss will be heard as the cartridge is pierced. Further tightening should not be needed. Since the CO2 cylinder seats against a flexible seal, it should be removed after shooting. A single cylinder was good for 36 shots, or 6 full clips. A two-cylinder lower tube, similar to that of the Crosman 160, was available for a time; but this was an aftermarket part not supplied by Crosman.
A single CO2 cartridge is used in the long gas tube.
The 622 was rated by Crosman at 450 fps; this gun exceeded that rating with all tested pellets. The temperature was around 90 degrees during shooting.
MV=muzzle velocity (fps), ME=muzzle energy (ft-lbs), ES=extreme spread (fps)
Getting the best accuracy from the 622 is a bit of a challenge. The forearm uses a single operating rod and can slightly rotate around the lower tube. This allows the gun to move upon firing if it’s held by the forearm. For best accuracy, support the 622 just ahead of the receiver by holding the gas tube. This is really a minor point; the 622 is not a long-range target gun — it’s a plinker, and one of the most entertaining ones at that.
10-meter groups with open sights
All pellets tested were more than accurate enough at 10 meters for plinking and informal shooting. Groups are 6 shots since that’s the magazine capacity. Here are a few of the best performers:
25-yard groups with a scope
The factory open sights just aren’t precise enough to produce the best accuracy at 25 yards. I mounted a simple 4x Leapers scope for these groups. Most pellets gave groups in the inch to inch-and-a-half range. There were a few standouts, however:
While the 622 isn’t the best engineered or most accurate airgun Crosman ever made, it’s still an interesting piece. There have been only a few slide-action airguns produced; and for plinking, the rapid-firing provided by a slide-action really ups the fun factor.
Many 622s are still in circulation, and they regularly show up at airgun shows and on auction sites. Lack of attention from collectors has kept the price reasonable. One caveat is to make sure the gun includes the clip — they fetch about 25 dollars apiece. It’s possible to load the rifle singly, but it’s tedious.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today is accuracy day with the Gamo P-25 air pistol. I inserted a fresh CO2 cartridge into the gun, loaded both of its 8-shot rotary clips and then slid the magazine into the grip.
I shot the pistol at 10 meters, which seems appropriate for a gun of this type. I shot it rested with a two-hand hold and my arms resting on the sandbag but the pistol free to move.
The pistol has open sights that are not adjustable. They have white dots, both front and rear, but that was cancelled by lighting the target brightly and shooting from a dimly lit place. I used a 6 o’clock hold, and the sights were very sharp and easy to align.
Because each rotary clip holds 8 pellets, I shot 8-shot groups instead of the usual 10. I don’t think it makes a big difference; and when you see the targets, I think you’ll agree.
The P-25 has blowback, so every shot except the first is single-action. I therefore cocked the hammer for that first shot, so all shots were single-action. It’s the most accurate way to shoot any handgun.
RWS Hobby pellets
The first pellets I shot were RWS Hobbys. Because they’re wadcutters, they left good holes in the target paper that were visible from the firing line. The pistol shot Hobbys to the left, as you can see, but the elevation was pretty good. The pistol’s sights are not adjustable, so to move the shots means you have to either aim off or use some Kentucky windage.
The group isn’t very impressive — 8 shots in 2.169 inches at 10 meters. Perhaps one of the other pellets will do better.
Gamo Match pellets
The next 8 pellets I shot were Gamo Match wadcutters. These pellets will sometimes be very accurate in a particular gun, but the P-25 I’m testing isn’t one of them. Eight shots went into 2.894 inches, though 7 of them are in 1.846 inches. Still, neither group size is especially good. They did go to approximately the same point of impact as the RWS Hobbys, however.
Crosman Premier lites
Next, it was time to try some 7.9-grain Crosman Premier lites. These domed pellets are sometimes the very best in certain airguns. And this was one of those times. Eight of them went into 1.624 inches, though they also went way over to the left.
Gamo Raptor PBA
The last pellet I tried was the lead-free Gamo Raptor PBA. We know from the velocity test that these pellets go the fastest in the P-25, but now we’ll see how accurate they are.
And the answer is — not very. Eight PBA pellets made a shotgun-like pattern that measures 4.036 inches between centers. Interestingly, they did tend to group in the center of the target — the only pellet of the 4 tested to do so.
This was one time I found myself hoping for greater accuracy from the test gun because it was so much fun to shoot. The blowback action is quick, crisp and comes as close to the recoil of a .22 rimfire pistol as I think I’ve experienced in an air pistol. Although the trigger is long and full of stops and starts, it’s also light and can become predictable after you learn its quirks.
The lack of adjustable sights means you have to find a pellet that shoots to center and is also accurate. Good luck with that. If Premier lites had shot to the center, they would have made this test end on a higher note. Because it shoots lead pellets from a rifled barrel, I’d hoped for better accuracy than this. Had I seen it, I would have rated this Gamo P-25 a best buy.
by Tom Gaylord, a.k.a. B.B. Pelletier
Today, we’ll look at the velocity of the Gamo P-25 air pistol, and something interesting that happened. Normally, I report on the velocity of 3 or 4 pellets and leave it at that, but a strange thing happened with the first CO2 cartridge in the test pistol.
I didn’t screw the piercing screw deep enough into the CO2 cartridge, resulting in the gas flow being hindered. I’ve experienced this a few times in the past, but this time it was very pronounced. After each shot, there was a period of time that ranged from 5 to 10 seconds, during which the gas flowed audibly from the cartridge into the gun’s valve. It sounded like a leak in the gun, but I noticed it only lasted a few seconds before stopping, so it wasn’t venting to the outside. It was the gas flowing from the cartridge into the gun’s valve, where it would be used for the next shot.
Shooting the pistol in the rapid-fire mode proved impossible with this first cartridge. The first shot went out at the normal velocity, and shot 2…fired immediately after the first shot…clocked 88 f.p.s. through the chronograph.
It was my fault
So, I screwed the piercing screw much deeper into the next cartridge. Problem solved! Don’t be tentative when piercing a cartridge in this pistol. Do it like you mean it. After I pierced the second cartridge correctly, the pistol performed exactly as expected. Rapid-fire worked as you would expect, and the gun kept up with my trigger finger.
The first pellet I tested was the RWS Hobby. Weighing 7 grains, the all-lead Hobby pellet tells me so much about an airgun’s powerplant. For starters, it tells me what needs to be done to get the 425 f.p.s. velocity that’s claimed for the gun.
Hobbys averaged 353 f.p.s. in the P-25. They ranged from a low of 333 to a high of 379 f.p.s., and some of that large variance may be due to the gas flow problem I mentioned. At the average velocity, Hobbys were generating 1.94 foot-pounds of muzzle energy.
The Hobbys told me what I wanted to know. This pistol wasn’t going to get its rated velocity with a lead pellet. So, I needed to try it with a lead-free pellet; and since this is a Gamo gun, the Gamo Raptor PBA sounded like a good selection.
The Raptor PBA pellet is made from metal that’s harder than lead. It weighs 5.4 grains and will generally boost the velocity of an airgun above what a lead pellet will, though the hardness of the metal actually slows it down sometimes. But in the P-25, the Raptor PBAs worked just fine. They averaged 412 f.p.s. and ranged from a low of 395 to a high of 432 f.p.s. So, the ads are right on the money. At the average velocity, this pellet generates 2.04 foot-pounds of energy.
Next up were the lead Gamo Match wadcutters. They weigh 7.56 grains and are sometimes quite accurate in some guns. In the P-25, they averaged 348 f.p.s. with a spread from 329 to 357 f.p.s. The average energy was 2.03 foot-pounds. This will be a pellet to try in the accuracy test.
Crosman Premier 7.9-grain lites
The last pellet I tested was the 7.9-grain Crosman Premier lite. They fit in the circular clips of the magazine rather easily, which caused some concern they might fall out; but the way the magazine is designed, only 2 pellets at a time are exposed in its clip. So the worry was for nothing.
Premiers averaged 344 f.p.s. in the P-25, with a spread from 330 to 360 f.p.s. At the average velocity, they generate 2.08 foot-pounds at the muzzle.
The double-action trigger-pull broke at exactly 8-1/2 lbs., which is light for a DA pull. On single-action, it broke under 4 lbs., with a huge creep at 2-1/2 lbs. That creep is consistent and lets you know when the gun is ready to fire.
While I got just 50 shots on the first cartridge, I got more with the second one. Besides the velocity testing, I did another test with an entire cartridge, just to see how the pistol operates in the rapid-fire mode. So, the correct piercing is very important. I fired an entire cartridge, just to see how the pistol handled. Everything worked smoothly until shot 48, when the blowback failed for the first time. After that, the blowback would work if I waited long enough between shots, but not if I shot rapidly. However, if you allow time for the gun to warm up, it keeps right on shooting.
There are certainly 75 or more powerful shots in the gun if you allow the gun to rest between shots. The blowback will work reliably past shot 50, as long as time is taken between shots. Shoot fast, however, and the gun cools too much and wastes gas.
Impressions so far
So far, I like the P-25. I like its simplicity and the light single-action trigger. If it’s also accurate, this might be a best buy.
by Tom Gaylord, a.k.a. B.B. Pelletier
Okay, now for something a little different. The Gamo P-25 air pistol is a 16-shot pellet pistol with blowback and a rifled barrel. This pistol operates on CO2, and the 12-gram cartridge is hidden inside the grip.
Normally, a gun like this is a BB gun, but this time there’s a rifled barrel — and the chance to shoot many different lead pellets, plus a trigger that’s both single-action and double action. Because of the blowback action, you’re going to shoot this gun single-action most of the time.
The P-25 is a 21st century handgun is every respect. It’s nearly all synthetic, entirely black and the grip is fat, as though enclosing a double-stacked magazine. The fixed sights feature three white dots — like night sights, but without tritium inserts. Align the three dots and put the center dot over your target…and I assume you’ll have minute-of-soda-can accuracy at 25 feet. We’ll find out more about that when we test the pistol for accuracy.
I like the fact that this pistol comes with blowback. That gives a realistic feel to each shot, which makes this a good trainer for maintaining firearms proficiency. When we get to the accuracy test, I’ll let Edith shoot the pistol and give her assessment, too. The gun I’m testing is serial number 12F31301.
The P-25 is a large pistol. Maybe it looks like a pocket pistol in the photograph above, but in person it’s larger than an M1911A1 in all ways, save length.
The trigger is very strange. Usually a single-stage trigger is crisper and lighter than a 2-stage trigger, but this one isn’t. While the pull weight isn’t that heavy, there’s a country mile of takeup even in the single-stage mode — i.e., when the hammer is already cocked. Once the takeup is done, though, the trigger breaks cleanly enough. It isn’t exactly crisp, but it is light and very predictable. I don’t think I’ll have any trouble with it.
The double-action pull is relatively light, though you’ll only feel it on the first shot after installing the magazine. Once the gun fires, the slide blows back, cocking the hammer for every successive shot.
The trigger blade is very wide. I find that gives a nice feel to the pull when I’m trying to control the let-off or point at which the trigger breaks.
The safety is another matter. It’s one of those Euro-lawyer safeties that have a center switch that’s pulled back before the lever can be moved. There’s no way to operate this kind of safety with one hand. It blocks the trigger when its on.
The magazine is a stick type with two circular pellet clips — one on either end. It’s a drop-free design, and the release button is on the left front of the grip frame, where a right-handed shooter expects it to be. The mag has to be ejected and turned around for the second 8 shots.
This gun runs on CO2. The manufacturer says it gets up to 425 f.p.s. with pellets, and we will test that for you in Part 2. The cartridge is hidden in the grip, and this time the enclosure is different. The bottom rear of the grip is pulled away from the rest of the grip, and two-thirds of the CO2 compartment is exposed. When the cartridge is installed, a conventional piercing screw tensions and pierces the cartridge. Don’t forget to put a drop of Crosman Pellgunoil on the tip of each new cartridge as it’s installed. That will keep your gun sealed for many years.
The P-25 is moderately heavy, at 29 oz., so the blowback action causes a fair amount of bounce. It feels not much different than a medium-weight .22 rimfire pistol shooting standard-speed long rifle rounds.
The barrel is rifled steel. That gives me some hope that this pistol will also be accurate. If the blowback feature doesn’t use too much gas, the P-25 could turn out to be a very nice plinking air pistol.
All things considered, at this point the Gamo P-25 air pistol looks like a good one. I hope it delivers on that promise.