Thread: 223. help?
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Old February 27, 2012, 03:25 PM   #8
Senior Member
Join Date: May 1, 2009
Location: Burnet, TX
Posts: 727
75 gr hpbt will work just fine in AR mags. The military uses 77 gr SMKs in the mk262 load which was designed for an M4. I've shot close to 1000 rounds using 75 gr bullets through my AR without a single problem.
Veteran OEF (2002) and OIF1 (2003) - US Army
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