Thread: 300 Aac Blackout (300blk)
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  #19  
Old 03-06-2011, 01:31 PM
Retooferab Retooferab is offline
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Join Date: Jul 2010
Posts: 42
11.2 gns was to fast in my 10.5" ar. Mine needed about 10.4 - .6 gns to stay sub-sonic. It is the 300-221 WTFever.
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