Re: 9 twist and 75gr A-Max:
http://savageshooters.com/SavageForu...c,38124.0.html
Also:
https://www.snipershide.com/forum/ub...Number=2132193
I'd think it'd be just fine considering the 223AI can push a 75gr bullet north of 2900fps, giving you a stability factor around 1.05...which is more than 1.0 ;D
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