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Posted: 2/16/2013 7:11:59 PM EDT
[Last Edit: 2/16/2013 7:17:21 PM EDT by kissmy300blkbrass]
Delete please
Link Posted: 2/16/2013 7:17:45 PM EDT
http://www.thetruthaboutguns.com/2011/12/foghorn/ask-foghorn-is-it-safe-to-fire-300-whisper-in-a-300-aac-blackout-firearm/

not the same thing - pressures could be different...
Link Posted: 2/16/2013 7:21:52 PM EDT
maybe I should be more specific - 300 whisper has no "standardized" specs as the 300 blk does. Check the specs of your specific rounds against those of SAMMI for 300blk
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