Is the 1600 f.p.s. air rifle real? by Tom Gaylord from Pyramyd Air” /> Is the 1600 f.p.s. air rifle real?, airguns report post” />

Friday, February 23, 2007

What's going on with Gamo?
Is the 1600 f.p.s. air rifle real?

by B.B. Pelletier

Need for speed
Speed sells - no doubt about it. Beeman was first to recognize it, then RWS Diana and finally Gamo learned that lesson a few years back. Which is why they built their Hunter 1250, a breakbarrel air rifle that really does shoot lightweight pellets to 1250 f.p.s. It was big news for a few years, but was eclipsed by the AirForce Condor, which does 1250 f.p.s. with 14.3-grain .22-caliber Crosman Premier pellets. So what would come next?

Raptor fell short
Well, Gamo's Performance Ballistic Alloy pellet, the Raptor, came next, of course. They were supposed to increase the velocity of any spring airgun, and my testing with the Gamo CF-X proved that they did. However, they did not live up to the other claims for penetration or power. They had reduced penetration, the same as any lightweight pellet would, and the power was lower, too.

Trickery?
But, the one thing I took for granted during all of this was that the Hunter 1250, now renamed the Hunter Extreme, was a real 1600 f.p.s. air rifle. Why did I believe it? Because Jim Scoutten shot one through a chronograph on his television show, Shooting USA, and got a little more than 1600 f.p.s. on an Oehler 35P chronograph on camera! However, now I'm not so sure.

If a Gamo Hunter Extreme will shoot a Raptor pellet to 1600 f.p.s., I reasoned that an AirForce Condor would go even faster, since I've already tested them with synthetic pellets up to 1450 f.p.s. in .177 caliber. But when I recently tested a .177 Condor with a Raptor, it topped out at 1486 f.p.s., well below the magic 1600 f.p.s. Gamo advertises. I know the Condor is far more powerful than the Hunter Extreme, so these results didn't seem right.

Call in the vigilantes!
An airgunner friend of mine was also surprised to hear that the Condor was testing slower than the Gamo, so he did some testing of his own. With a new .177 Gamo Hunter Extreme, the maximum velocity he could get with Raptors was 1420 f.p.s., well off the 1600 f.p.s. pace it's supposed to give and also behind the Condor. What gives?

Gamo deserves the benefit of the doubt
Now, I know ways of boosting velocity in almost any spring air rifle, but was that what had happened, or was my friend's Hunter Extreme just slow? I would like to believe that Gamo would not advertise their rifle at one velocity but actually ship it knowing that it develops 180 f.p.s. LESS! So I need some help from you readers to get to the bottom of this mystery.

Let's find out
I am asking any Gamo Hunter Extreme owners who own chronographs to report their velocities with Raptor pellets. The one rifle that has been tested thus far may have had something wrong with it, so let's see what a larger sample of guns can do. Is the Hunter Extreme a real 1600 f.p.s. air rifle?

I don't care whether the rifle gets 1600 f.p.s. or not, because no airgunner would ever shoot one that fast and expect any sort of accuracy. They would use heavier pellets to slow down the speed below 1,000 f.p.s. and even below 900 f.p.s., if possible, because that's where the accuracy is. But, if a company advertises 1600 f.p.s., then their rifles ought to be able to deliver! On the eve of the RWS Diana 460 launch, I want to be sure the playing field is level for all competitors.

36 Comments:

At February 23, 2007 6:15 AM, Anonymous Anonymous said...

Interesting! This got me thinking. We know heavier pellets do better in pcp rifles, could the opposite be true of light pellets? Maybe a pcp does not have enough initial pressure to get the lighter pellets moving as fast as a springer can. Or maybe the inertia of the air inside a pcp tank holds it back, preventing it from reaching the same velocity as the air in a springer, wich gets "shoved" onwards by the piston. Im probably way off here, but its just a thaught.

P.S I did as you said with my cfx and its alot better now(comments posted on : The new Webley Patriot! - Part 1 - 29 January).
I also replaced the piston seal,and both breach seals.There is no more dieseling, and i get consistent one hole groups at 10 yards, I just havent had
a chance to test it at further ranges yet. Just for those that are interested : I have tested the following pellets in my cfx :

Gamo Pro magnums, Gamo Expanders, Gamo Pro Hunters, Gamo Rounds,Gamo TS-10, Diabolo Master, Crosman Matchpell, Skenko Type 1, Champion Fireball, Crosman Premier Ultra Magnum.

The Gamo Pro hunters, and the CP Ultra Magnums are by far the best performers, with not much to choose between them. Even though the CPUM's are 10.5g, the point of impact at 10 yards is about the same as the Gamo Pro hunters, while gamo TS-10 hits about 1.5 inches lower!

Thanks for the great BLOG!

William.

 
At February 23, 2007 7:11 AM, Blogger B.B. Pelletier said...

William,

Great comment! I'm sure it will help many others who are interested in the CF-X.

B.B.

 
At February 23, 2007 9:09 AM, Blogger pestbgone said...

1600 fps reminds me of the Star Wars parody, Space Balls, where their top warp speed was “Ludicrous Speed”.
But off the subject, I know you have mentioned an upcoming review of the Bam B50 PCP and I just wanted to add my name to the list of those eagerly awaiting it.

 
At February 23, 2007 12:23 PM, Anonymous Anonymous said...

B.B., or anyone else reading this blog,

This might be a strange question, but what do you do with the used pellets that you've shot. Do you just throw them away or is there a way to recycle them? Do give them to someone who needs lead so they can melt them to use for something else? Or is it not possible to salvage?

 
At February 23, 2007 1:08 PM, Anonymous Anonymous said...

BB, can you suggest any other sources of airgun barrel blanks besides Lothar Walther?

 
At February 23, 2007 1:15 PM, Anonymous Anonymous said...

Recycling pellets

Maybe you could find a die and cast ur old pellets. We all know that lead melts at a very low temp. so it wouldnt be that hard. I look for dies somewhere. Dougbt I'll find much but its a thoughty

Kyle

 
At February 23, 2007 1:28 PM, Blogger B.B. Pelletier said...

Recycling,

I'm also a handloader who casts bullets from lead, so I save my pellets (about 25K a year) and melt them for the lead.

B.B.

 
At February 23, 2007 1:34 PM, Blogger B.B. Pelletier said...

Barrel blanks,

Mac-1 gets Weihrauch barrels, but I don't know where from. Airgun barrel blanks are not generally available unless you want to buy in quantity.

Of course any custome barrelmaker could tool up for a run, but Lothar Walther would be cheaper and probably better, too.

B.B.

 
At February 23, 2007 1:46 PM, Anonymous Anonymous said...

Heres a cite I found about dies and and tools for pressing new pellets. Lots of info, I read only a few paragraphs but looks cool.
http://www.corbins.com/pellets.htm

Kyle

 
At February 23, 2007 2:36 PM, Blogger Shaffer78 said...

Ohhh. The RWS 460 is finally coming out? I've been waiting on this for months. I hope you do a write up on it.

 
At February 23, 2007 2:54 PM, Blogger B.B. Pelletier said...

Shaffer,

I will. I thought it was just another name for the 46 underlever, but now I see it's an entirely different airgun.

B.B.

 
At February 23, 2007 3:34 PM, Anonymous Anonymous said...

B.B.
question on the RWS 46 underlever rifle. I believe in your review, diana designed it to go against the TX200, and I think you mentioned that accuracy wise is almost the same and depends more on the shooter. Regarding yesterdays post about the TX200 and other air arms being a good investment, what is your view of the RWS 46 or other RWS rifles in terms of investment and value over the years?

 
At February 23, 2007 4:23 PM, Blogger B.B. Pelletier said...

RWS Diana rifles don't have the same value retention as the rifles I mentioned.

B.B.

 
At February 23, 2007 4:24 PM, Anonymous Nate392 said...

B.B.

Why not do a post on how to recycle pellets and cast new ones for re-shooting?

 
At February 23, 2007 4:41 PM, Blogger B.B. Pelletier said...

Nate392,

There really aren't any good pellet molds available, because pellets need the diabolo shape (wasp waist and hollow tail) to stabilize properly. As small as they are, mass-wise, they would be very difficult to cast because the mold blocks would never be able to stay at a good operating temperature. It's like handloading for .25 ACP. It's too small so nobody does it.

Solid bullets could be cast in airgun calibers, and there are some molds for that, but then you need a hyper-powerful air rifle to drive them fast enough to stabilize. Otherwise, they tumble and go everywhere.

Round balls in airgun calibers are so small that they would be extremely difficult to handle, plus they would have the same mold temperature problems as diabolos.

I cast firearm bullets with my waste lead. After melting all the old pellet fragements and skimming the dross I add a small amount of tin to harden the bullet and make it cast better. I make big 412-grain slugs for my .45/70.

B.B.

 
At February 23, 2007 6:31 PM, Blogger Curtis said...

Hello BB:

Off topic quick-question: what lube to use on the hand, cylinder bolt, hammer, and whatever internal parts of the trigger mechanism that I can reach (without disassembling the revolver) of the S&W 586 clone made by Umarex? I realize that Pellgunoil is the lube to put on the CO2 bulb for the seals, etc., but for these other parts that I mentioned, will regular firearm oils like the teflon-based Rem-Oil be okay? If so, will this be alright for the other Umarex copies like the CP88 as well? Thanks for your time!

Curtis

 
At February 23, 2007 10:07 PM, Blogger dm20 said...

B.B. has a sharps! i'm shocked... again!
what do you use it for? with your HUGE selection of guns i would think there would be a better one for hunting.
a hell of a way to plink, with a sharps.
send watermelons into orbit, disrupt satellites?

 
At February 24, 2007 7:39 AM, Anonymous B.B. Pelletier said...

dm20,

Not a Sharps; a Trapdoor Springfield. I'm developing loads for hunting. It's a good deer rifle.

Also, I shoot it to learn about ballistics.

B.B.

 
At February 24, 2007 7:52 AM, Anonymous B.B. Pelletier said...

Curtis,

Remoil is fine for these purposes. But please use it sparingly. Tetra Lube is another good one, with similar composition.

B.B.

 
At February 24, 2007 11:34 AM, Anonymous Anonymous said...

so, is it really possible to boost velocities in excess of 1600 f.p.s.? any tests done? on the gamo website they have a video of some dude shooting the hunter extreme into a chrono and getting 1628 fps! and one more thing, if the raptor pellets deliver less power than standard lead and have deep penetration (which is not beneficial for a hunter)than why do they advertise them for "hunting only"?

 
At February 24, 2007 2:56 PM, Anonymous Anonymous said...

Could oiling the Gamo to induce dieseling potentially boost the velocity to 1600 fps?

 
At February 24, 2007 3:01 PM, Blogger B.B. Pelletier said...

Oiling,

Yes! The more volatile the oil, the faster the combustion.

B.B.

 
At February 26, 2007 2:22 AM, Blogger Curtis said...

Hello BB:

I am interested in both the Drulov DU-10 CO2 pistol and another called the "Twinmaster CO2 Trainer". Can you give me your opinion as to which of these two pistols is the better for the purpose of training for firearms (especially .22 rimfire) target pistol training? I notice that the Twinmaster appears to be CO2 bulb-fed only where the Drulov can be bulk fed. What is the comparative quality of build of each of these pistols ? Thanks for your input.

Curtis

 
At February 26, 2007 6:58 AM, Anonymous B.B. Pelletier said...

Curtis,

I've only tested the Drulov. The Twinmaster is like a 10-meter target pistol, while the Drulov is like a .22 sport pistol. Therefore, in my opinion the Drulov is more realistic for what you want to do.

The Drulov's trigger is on the light side of what you'll encounter in a .22 sport pistol - especially an American-made pistol. But it's very smooth and easy to operate.

Accuracy is superior to all but world-class .22s.

B.B.

 
At February 26, 2007 1:11 PM, Anonymous Anonymous said...

Recycling Pellets
If you know any fishermen who make their own sinkers or jigs, they might be interested in melting down used pellets, and the purity of the lead shouldn't affect them. Herters used to sell the molds, but I think they are out of business.
MCA

 
At February 26, 2007 6:22 PM, Anonymous Anonymous said...

Curtis,
If you are set up for HPA, look at the PCP Twinmasters, eg. the Allrounder. I prefer HPA to CO2. Build quality is very good, but certainly not equal to a Feinwerkbau. Trigger is quite good, but again still not quite that of a full blown match pistol. I own an Allrounder and would be happy to answer any specific questions you may have about it.

 
At February 27, 2007 2:16 PM, Anonymous Anonymous said...

Hi BB!

Just a quick one.

See this article : http://www.network54.com/Forum/530422/message/1168001609/airgun+velocity-+design+physics

This might explain why a pcp rifle cannot achieve the same speed as as a springer with a light pellet.

The article basically states that the maximum speed at wich the air can move is limited by the speed of sound. And the speed of sound is limited by the temperature of the air, but is independant of the pressure.

Therefore IMO it is entirely possible that a springer could propel a light pellet faster than a pcp can, because the air in a springer gets a lot hotter than in a pcp!

Just goes to show that there is allways another variable to consider.

Of course, it could still be that Gamo just tweaked the advertised results a litte :-)

Cheers,
William

 
At February 28, 2007 9:34 AM, Anonymous Anonymous said...

BB-Don't get the speed race using springers. They should get what they have now, to settle down. l found that REDUCING speed makes for a far superior hunting rifle, due to making the rifle less sensitive, allowing easier access to it's repeatable accuracy.

 
At February 28, 2007 9:46 AM, Blogger B.B. Pelletier said...

I'm not in a speed race with anyone. But Gamo has a huge advertising campaign based on 1600 f.p.s., and I want to know whether it's true or not.

If you read all my past posts on accuracy, I always advise shooting at less than 900 f.p.s.

B.B.

 
At March 04, 2007 8:55 PM, Anonymous Anonymous said...

Have you seen youtube.com's pig vs pellet supposedly sanctioned by Gamo where a pig is killed using Gamo's Huner Extreme and their Performance Ballistic alloy pellet? I don't believe it! We are never shown the gun up close. If he did shoot an animal that size with a .177 cal. pellet, he needs mental treatment.

 
At March 05, 2007 12:44 PM, Anonymous Anonymous said...

Just saw some of the price listings on the Diana 460 magnum. It's going to be about 150 more than the 48 or 350 magnum. I hope you do a review of the .22 caliber version. As you have mentioned before, launching a .177 pellet that fast is overkill and .22 would make better use of the power. Thanks.

 
At March 10, 2007 4:10 PM, Blogger roger said...

I own a Gamo CFX.We're situated at 6000 ft above sea level (Johannesburg South Africa)which means a significant reduction in performance with my CFX.standard lead pellets achieve about 760-800 ft/sec.Raptor PBA 1000ft/sec dry and with a bit of oil behind the pellet I recorded a best velocity of 1483 ft/sec.!!Prometheus (yellow) 930 ft/sec dry and 1298ft/sec oiled.The latter has much better pennetration both dry and oiled than the PBA.Another amazing pellet as far as hard(44 gallon drum) penetration is concerned is the Skenko no.1 pellet.Penetrates the flat side of the drum at 10 meters (Dry as you can't oil the Skenko because it's flat at the back).Better steel penetration than any pellet I've tested.All velocity testing done with a Chrony.More testing soon on velocity,accuracy and penetration.

 
At March 11, 2007 11:07 AM, Anonymous B.B. Pelletier said...

Roger,

Your "bit of oil" behind the pellet is exactly how I think Gamo faked the 1600 f.p.s. shot. It causes a detonation, turning an airgun into a firearm.

Thanks,

B.B.

 
At March 13, 2007 8:10 PM, Anonymous Anonymous said...

i have a gamo 1250 tested with jsbs .177 f1 crono readings are 1060 fps

 
At March 14, 2007 8:53 AM, Blogger B.B. Pelletier said...

Could you please test the velocity with Raptors? The 1250 is the rifle Gamo turned into the Hunter Extreme, so your rifle should get 1600 f.p.s., if Gamo is to be believed.

B.B.

 
At May 02, 2007 4:32 PM, Anonymous rich said...

people quite commonly reload 25 acp

 

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