Why Gas Piston over Direct Impingement? - Page 4
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Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > Why Gas Piston over Direct Impingement?

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Old 01-24-2011, 09:30 PM   #31
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Originally Posted by JonM View Post
Its a damn good round for dispatching two legged goblins in the 55grn 1:12 twist barrel and bullet combo. The problem with it today is the 1:7 and 1:9 twist and 62 grn bullets have effectively neutered the round.
Why would you say that? 69gr. BTHP moving at 3100+ FPS at the muzzle not do any damage?
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