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Old November 15, 2012, 08:45 AM   #4
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Join Date: August 9, 2011
Posts: 1,293
300 ACC Blackout is a 7.62 x 39 for AR's. Super SHTF round, but not popular enough yet. I might get an upper for fun.
Actually the 300 ACC is based off the 300 Wisper and was designed to run subsonic with a supresser and heavy bullets. It does fairly well supersonic with lighter bullets as well but is in no way made to compete with the 7.62x39. The 6.8 SPC is more comparable to the 7.62 but doesn't have the feeding issues in an AR platform associated with the heavily tapered 7.62 cartridge.
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