Originally Posted by LiveSteam
You AR-15 nuts with your 1/7 & 1/9 twist barrels will freak over this bullet over some Varget once you start reloading
Sierra .224 69 gr MatchKing
Remember on primers for Ar-15 is 7-1/2 not the 6-1/2s. The firing pin will hole a 6-1/2 primer & things get dirty real quick
So, two questions:
1. I need to buy .224 bullets and not .223?
2. Does the 7 1/2 vs. 6 1/2 primer difference only apply to AR-15 style guns, or all 223/556 rifles?