Dear PSA,
Please make faster twist 300BLK barrels. Q uses 1/5 twist and they are widely acknowledged to know what’s up.
This other Poster wants the same thing: Jakl twist rates.
Please and thank you.
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Yes! Thank you. The founder of Q literally invented 300 AAC. I think he knows what a good twist rate is. PSAs owner now owns AAC and should do it justice.
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I will pass the suggestion up the chain of command! Please also post this under the “Product Suggestion” thread.
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I’m interested as to why they want spin a short, fat slow bullet that fast? It’s usually the opposite. long skinny bullets usually have the fast twist rates. I know that the Valkyrie guys get down into the sixes but they’re pushing 90+ gn 224’s. I can’t think of anything in the fives.
Sig does make a 5, aimed at shorter barrels w/monolithic bullets. I was surprised to learn that 7 and 8 are the standard rates. 30cal was 12 until long skinny bullets came along.
I believe the idea is to stabilize the Bullet more quickly- get it stabilized in the short barrel typical in 300blk
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I’m sure that they have their reasons, It just seems kind of strange to me to want to spin it that fast. I’ve only shot my 10.5" 762x39 out to 300 yards, It’s basically the same bullet going 200fps faster and I can assure you that no keyholing occurred with a 1 in 10 twist…
The SAAMI spec for 300 Blackout requires 1:8 twist at a minimum.
1:8 or 1:7 seems fine for 110 to 150gr bullets. The lighter projectiles stabilize just fine in a short barrel with a slow twist rate.
Shoot some 200-220gr subs out of a short barrel with a slow twist and look at your paper targets. It appears the bullets are tumbling, entering the paper sideways. This doesn’t happen with a higher twist rate, such as 1:5. The heavier subsonic 300 Blackout bullets need more stabilization out of a short barrel. Also, the higher twist rate produces slightly higher velocities and muzzle energy.
This is what my research suggests. I’d LOVE to see some high speed film. Irregardless, a high twist rate won’t hurt a thing, but a lower twist rate could.
I emphasize “could”. 300 Blackout equals firearms voodoo 
Hope this fuel to the fire helps, 
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I will send the suggestion up the chain of command!
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To be fair K.B. of Q was probably about ten years old when that cartridge was invented. JD Jones made the design like thirty years ago. Along with a 338 Whisper to shoot 300 grain bullets subsonic out of an AR-10, sound familiar? K.B. has done a lot of innovative things no doubt with his honey badger and suppressor line but JD does deserve some credit for his innovations as well.
they coming out the 8.6 Black Out that uses 1:3
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The FAST twist rate is not engineered for stabilization….although it does. The FAST twist rate was discovered to have significantly better terminal ballistics than the slower twist rate. This was essential because the subsonic velocities do not provide the energy necessary for the bullet to perform as it was designed.
The bullets were designed to penetrate and mushroom at higher velocities.
They found that they could get better performance with a faster twist rate.
That faster twist rate comes at a price though !
In the 8.6 BO……they are having to use Solids….rather than a conventional copper jacketed/ lead core bullet because the twist rate is so fast that the bullets were failing at the optimum twist rate.
Here in lies the problem……currently 8.6BO is only available from 1 or 2 suppliers……so it’s going to be $ $ expensive $ $ to shoot until it becomes mainstream like the 300 BO.
I don’t know if the same applies to the faster twist rate for the 300 B0……
But I suspect that is probably why the faster twist rate barrels are not widely available.
Please, for the love of God, stop making those 1:8 barrels. The whole appeal of 300 BLK is the ability to suppress, so optimize for that. We need 8 to 10-inch barrels at 1:5 twist. At the very least, compromise and make more of the 1:7s. It’s so irritating to see you’ve got like 2 or 3 1:7’s available, at most, and the rest is basically useless to anyone who uses 300 BLK for its intended application.
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Any feedback on the 1:5 twist? I am disappointed in my new PSA .300 blk 8.5 inch AR pistol with a 1:7 twist. I bought it to shoot suppressed and can’t find any subsonic ammo that will stabilize. I’ve taken the gun to a smith who said I needed a faster twist rate and recommended replacing the barrel with a 1:5. Will PSA offer this in the near future?
welcome to the forum
not many companies making a 1:5… I think it has something to do with the machinery not being able to do it
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