which barrel twist for 40/50 grain subsonic?

[vincentvangerve]

Hi all, do you guys know which barrel twist you normally would need to stabilise a subsonic 40/50 grain lead .22 bullet ? Barrel length woul be 25 inch. looking for max accuracy at out to 100 yards.
Thanks :drinks:

 

[stoner25mkiv]

I'm assuming you are talking about a rimfire, from your statement about it being a lead bullet. For a 40 grainer I don;t know why it would be any different from a std. vel. round which would require a 16 inch twist. The Aquilla ammo, the sniper subsonic uses a 60 grain bullet and it takes a much faster twist.....around a 10 inch if memory serves me. You can go to, I think, Soundtechsilencer.com and get some good info on it. You might have to do a generic search for that website to get the correct addy. At any rate, the gentleman that has that business build rifles especially for the sixty grain subsonics.
....addy is www.soundtechsilencers.com

 

[CWG]

JDJones told me he prefers to use the fastest twists available for subsonics- going against thinking i.e. a 40 grain .223 would be a 14 or 12 twist, he suggested going to a 9 or a 7

just the .02 I got from someone else, and he seems to know his beans.

 

[papapaul]

The meguir Sniper SubSonic .22 LR ammo has a 60 grain bullet and is quite long. They do not stabilize well in a 1-16 or slower barrel. This is great cat ammo. I would think a 1-10 would be good. I just make close shots and live with the reduced accuracy.