Question for all you rimfire shooters

With air rifles there area number of ways you can potentially tune the barrel.

Some have a grub screw on the barrel band to apply compression to the barrel restricting movement - although this has potential issues.

A number have barrel weights as accessories - these can be applied as a mid barrel tuner.

A number also have bloop tube type extensions that do add a non adjustable weight to the muzzle.

There are a number of air strippers out there, some very similar to one another. They are still up there with the 6 o'clock firing pin. Some believe they work and some do not.

It depends on what your thoughts are. However, the main manufacturers have little interest in developing anything for air rifle - at the moment.

The upcoming WC is a real chance to show them the sport is taking off and they will be looking at the USA as you guys offer a very big market. The more noise we make the better.
 
Bill,

you are more than welcome to try my rifle during practice.

Carl, I guarantee there will be a lot of noise coming out of these rifles when fired.:D
I also agree in your assessment.

Regards,

Joe
 
With air rifles there area number of ways you can potentially tune the barrel.

Some have a grub screw on the barrel band to apply compression to the barrel restricting movement - although this has potential issues.

A number have barrel weights as accessories - these can be applied as a mid barrel tuner.

A number also have bloop tube type extensions that do add a non adjustable weight to the muzzle.

There are a number of air strippers out there, some very similar to one another. They are still up there with the 6 o'clock firing pin. Some believe they work and some do not.

It depends on what your thoughts are. However, the main manufacturers have little interest in developing anything for air rifle - at the moment.

The upcoming WC is a real chance to show them the sport is taking off and they will be looking at the USA as you guys offer a very big market. The more noise we make the better.
 
Hi Dave - sorry to hear your wife is ill. Hope she is better and talk soon. Carl
 
It might be wise to look at the current crop of Olympic grade air pistols. For several years now the barrels are ported ahead of the pellet exit point. There is very little pressure left at the time of exit. This is in addition the the compensator at the muzzle which serves to further relieve/ deflect residual pressure . I do not have my FWB p40 here at the shop or I would post a pic, this is apx 7 ft lb ( 500-600 fps) unit ( cal .177). The idea behind the 2 sections is to have no air pressure influencing the pellet's trajectory. As yet I have not seen this applied to the Olympic rifles likely due to the longer barrel and the low 7ft lb (500-600 fps , cal .177 8.5gr) power. Jumping to the 12ft lb and higher levels I would think applying this system might be advantageous. The thought that there might be a problem arising from air turbulence upsetting the trajectory of the pellet at the time of exit has been around for a long time although I have never read any proof positive. I am not up to speed on the latest tech stuff Olympic wise as I have been out of that loop a considerable amount of time.
 
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People seem to think the only turbulence comes from the air propelling the pellet from behind. What about the air in the barrel that is accelerated ahead of the pellet? For a 24" .22 barrel that is about 14ccs of air that is rushing out the barrel ahead of the pellet.
Dan
 
To DanB, referring to my post, the ports in the barrel would reduce that resistance a bit. As the air ahead of the pellet is uniform and exits the barrel prior to the pellet, I would think that it has little or no influence on the trajectory. Now on the other hand 2600 psi behind the pellet rushing past it just as the trailing edge of the skirt clears the muzzle in conjunction with the light weight of the projectile and its relatively low velocity could cause an effect, given that nothing is absolutely perfect. We already know the effect a poorly formed skirt, or improper fit of pellet to bore will have.
 
Its a reason I prefer to have the muzzle pressure under half of what you are citing. and I'm kinda partial to strippers.
 
Flags & Anthems

Today the WRABF Secretary requested all Team Captains supply their Countries Flag & Anthem, what an honour and incredible feeling it would be to see your National Flag and hear your National Anthem while you get a Gold Medal at a World Championship from a sport you love.
 
Great news about the playing of the National Anthem while flags are blowing in the breeze for the winning countries, Bill.

The wife is doing better Carl, and thanks for asking.

As for releasing the bore pressure both before and after the pellet: I would thing that by porting the barrel for the last couple of inches using very small holes drilled at an angle back into the barrel could prove to be very advantageous if done right, but I also think you'll find that you still need the addition of a stripper. And I feel strongly that you will find it necessary to be able to also be able to tune the harmonics out of the barrel before the optimum accuracy level for any gun will be found. Haven't done anything yet about the porting, but am working on the stripper/tuner combination and think I may have a solution. Plan to talk with my contact tomorrow to run everything by him, then see if he'll make what I have in mind.

Dave
 
Good news Dave - keep her fit.

Funny you should be saying this as I have just got off the phone with a guy that made my air stripper - his does most of his work for FT and HFT, but has agreed to make a prototype based on the one I have produced to test over the coming months. A combination of three ideas.

For me he makes one of the best air strippers out there that works - hopefully good news to follow.
 
Carl,

He's probably the same fellow I'm contacting if it's the guy you had sent me all the info on. Small World! Maybe he can combine your thoughts with mine and come up with something truly amazing.

Dave
 
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