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01-02-2017, 12:15 AM
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US Veteran
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Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
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I would assume that the chamber is cut to .300 Blackout specifications, since the case length and the OAL is longer on the BLK than the Whisper.
Ask Foghorn: Is it Safe to Fire .300 Whisper in a .300 AAC Blackout Firearm? - The Truth About Guns
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