Your MOAV valve is very interesting and for all the hunters out there a MUST have. That's HUGE power for a .25 cal. Very good shot count too. Well done!
Thank you as far as hammer spring setting I designed this so that once you set the hammer spring to get the valve to open you just leave it there no need to crank it down regardless of how light or heavy a slug you choose to shoot
Without a doubt the most powerful upgrade you can get for the Texans. I get 1095 fps shooting a 105 grains slug ; tether at 4000 psi out of a 9L tank with the externally adjusted Huma regulator. 1000 yards shots can easily be achieved with it. I need to try those Nielsen 85gr. slugs. Amazing speed.
Comparing the results of this test to your earlier test on your 85 yard outdoor range using those bullets traveling 200+ fps less, suggests an instability at 1170-1180 fps. The vertical stringing for your first three rounds could be due to a tendency for the bullets to strip the rifling at that speed. If you have the capability to powder coat the bullets and size .0005+" over grove diameter, I would wager the first 3 shots would become much tighter. These results in the power-burner cast bullet world are pretty typical of one pushing bullets too hard and remedied by an e.g. BHN adjustment, etc. It's amazing you can shoot un-lubricated, soft lead as well as you do at those velocities, but I would think leading would become a problem if everything isn't perfect.
Thank you, very interesting. The vertical stringing could also be coming from the barrel harmonics with such a long 34-inch barrel. As there is now more harmonic vibrations with the big increase in power Also, most airgun slugs are designed for the 950 to 1050 fps range. My goal with MOAV was to be able to push slugs way past this. We now also have to start looking at slug design to match barrel twist rates. So, longer, heavier slugs, faster twist barrels, and the MOAV Valve now give us the ability to go down that road. As far as leading goes, I agree if you were to shoot these slugs in a firearm, you would be looking at speeds of over 3000 fps, and then that would definitely be an issue. Looking at recovered slugs, I don't see any sign that the bullet is stripping on the rifling, as I assume if it were, the rifling engraving would be all over the place. Powder coating is not an exact science, so getting a consistent coating thickness is difficult for most shooters, and the coating would vary from one bullet to the next. But if it could be made an exact science, then it may benefit.
It doesn't take much instability to get vertical stringing at 55 yards. I suggest video taping the bullet's path through a scope camera at high speed and playing it back to see if there is any bullet yaw, which is typically induced at the muzzle. You might need to weight the rifle to get good footage and a camera at the muzzle may yield informative results. BTW, I said the vertical stringing could be due to a tendency for the bullets to strip the rifling at that speed, not the rifling is "all over the place". I'm suggesting the bullet's path down the barrel is fighting the rifling's influence and there are ways to resolve it. Barrel harmonics could be an issue, but it would be wise to check for bullet yaw first.
In the video on the right-hand side of the screen there is a sign that says No Rapid Firing Allowed just below that sign also to the right of the Box of Nielson Ammo
Your MOAV valve is very interesting and for all the hunters out there a MUST have. That's HUGE power for a .25 cal. Very good shot count too. Well done!
Thank you, the main goal, of MOAV XL Magnum Valve series is to get alot more power down range to make more ethical kills
Amazing job on the upgrade kit.
Unbelievably powerful, and this is on the lowest hammer spring tension.
Superb!!
Thank you as far as hammer spring setting I designed this so that once you set the hammer spring to get the valve to open you just leave it there no need to crank it down regardless of how light or heavy a slug you choose to shoot
@@AfricanAirOrdnance
Amazing
Thank you
Very Cool 👍👍👍
Without a doubt the most powerful upgrade you can get for the Texans. I get 1095 fps shooting a 105 grains slug ; tether at 4000 psi out of a 9L tank with the externally adjusted Huma regulator. 1000 yards shots can easily be achieved with it. I need to try those Nielsen 85gr. slugs. Amazing speed.
Absolute Beast for such a small calibre
I think you will have a winner. If you make this regulator, I will buy a kit in a heartbeat.
Thank you we do make this upgrade already its our 2024 version they are available at www.africanairornance.com
Very good !!!
Thank you! Cheers!
Comparing the results of this test to your earlier test on your 85 yard outdoor range using those bullets traveling 200+ fps less, suggests an instability at 1170-1180 fps. The vertical stringing for your first three rounds could be due to a tendency for the bullets to strip the rifling at that speed. If you have the capability to powder coat the bullets and size .0005+" over grove diameter, I would wager the first 3 shots would become much tighter. These results in the power-burner cast bullet world are pretty typical of one pushing bullets too hard and remedied by an e.g. BHN adjustment, etc. It's amazing you can shoot un-lubricated, soft lead as well as you do at those velocities, but I would think leading would become a problem if everything isn't perfect.
Thank you, very interesting.
The vertical stringing could also be coming from the barrel harmonics with such a long 34-inch barrel. As there is now more harmonic vibrations with the big increase in power Also, most airgun slugs are designed for the 950 to 1050 fps range. My goal with MOAV was to be able to push slugs way past this.
We now also have to start looking at slug design to match barrel twist rates. So, longer, heavier slugs, faster twist barrels, and the MOAV Valve now give us the ability to go down that road.
As far as leading goes, I agree if you were to shoot these slugs in a firearm, you would be looking at speeds of over 3000 fps, and then that would definitely be an issue.
Looking at recovered slugs, I don't see any sign that the bullet is stripping on the rifling, as I assume if it were, the rifling engraving would be all over the place.
Powder coating is not an exact science, so getting a consistent coating thickness is difficult for most shooters, and the coating would vary from one bullet to the next. But if it could be made an exact science, then it may benefit.
It doesn't take much instability to get vertical stringing at 55 yards. I suggest video taping the bullet's path through a scope camera at high speed and playing it back to see if there is any bullet yaw, which is typically induced at the muzzle. You might need to weight the rifle to get good footage and a camera at the muzzle may yield informative results. BTW, I said the vertical stringing could be due to a tendency for the bullets to strip the rifling at that speed, not the rifling is "all over the place". I'm suggesting the bullet's path down the barrel is fighting the rifling's influence and there are ways to resolve it. Barrel harmonics could be an issue, but it would be wise to check for bullet yaw first.
Fps... tyvm 👍🏼🎯
In the video on the right-hand side of the screen there is a sign that says No Rapid Firing Allowed just below that sign also to the right of the Box of Nielson Ammo