Subsonic 300 In Hot Weather - Quarterbore's Forums

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Subsonic 300 In Hot Weather

08-15-2010, 06:58 AM

tslack

Junior Member

Join Date: Aug 2010

Posts: 1

Subsonic 300 In Hot Weather

Hey Guys, New to the forum. I loaded some 300 whisper with 220 grain sierra bullets chronographed at 1046fps. I live in Texas with the temp. at 95 degrees and 80% humidity. I am getting a sonic crack with my ar-15 rifle. Is this to fast a round for my conditions. Thanks, Tom

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