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Old January 24, 2013, 02:35 PM   #1
Magnum Wheel Man
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Why is the 1 in 16" about the only twist rate you can get in aftermarket 10-22 barrel

are they that much more accurate than than the 1 in 14" or 1 in 12" ???

I like a heavier bullet in general... & I'd like to switch out for a heavy barrel on my 10-22 ( already have a heavy barrel channel on my laminated thumbhole stock ) but I've been holding off, for something with a faster twist rate, may want to shoot 40 grainers or try the heavier subsonics... I guess if the 1 in 16" is leaps & bounds more accurate & does actually stabilize the subs well, I could go that route ???

thoughts ???
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Old January 24, 2013, 02:47 PM   #2
zukiphile
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The Aguila 60 grain subsonic is very much an outlier. Green Mountain made a special high twist barrel when that round was new. Maybe 15 years ago, one of the outfits made me 42 grain round for silhouette, but everything else of which I am aware is 40 grains or less.
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Old January 24, 2013, 02:55 PM   #3
CCCLVII
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I have a 1 in 9 twist rate barrel on one of my 22s. It does poorly with 40 grain ammo though. I bought it cheep not seeing the difference at the time. I hear there is some ammo it likes... haven't looked in to it yet.
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Old January 24, 2013, 03:04 PM   #4
Magnum Wheel Man
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I'd think 1 in 9 would be pretty fast, amplifying any imperfections in the bullets, but a 1 in 12" or 1 in 14", would seem versitile enough for both...
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Old January 25, 2013, 02:42 AM   #5
Scorch
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1:16" twist isn't special, it's just standard, has been for over a century. It's all that's needed to stabilize 40 gr lead bullets and turns out great accuracy with 22LR. If you want a faster twist, they are available. Remember, up until fairly recently, heavy-for-caliber bullets were very scarce in centerfire cartridges a.d didn't exist for rimfires.
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