Forum: 300 Whisper Rifles and Pistols
07-17-2005, 02:01 AM
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Replies: 7
Views: 2,436
It's a pretty common mistake to trim 5.56 brass...
It's a pretty common mistake to trim 5.56 brass down to 1.4 since that is the length of the .221 fireball; but not the 300 whisper. The real trim to length for the 300 whisper is 1.355".
Don't feel...
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