Thread: Other Sports Off Season Lets Talk Guns
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Old 11-15-2012, 12:43 PM   #2675
verbaljitsu verbaljitsu is offline
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Quote:
Originally Posted by kepp View Post
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?
1. You want a .224 bullet.
2. The difference in primers is two fold: for pressure and firing pin engineering. For 223, you'll want 7 1/2. 6 1/2 is probably safe, but is softer and meant for a lower pressure cartridge. AR's have a firing pin that floats which can also cause slamfires with softer primers supposedly. I would avoid the whole mess and just buy Winchester Small Rifle primers.
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