Forum: 300 Whisper Ammo and Reloading
10-07-2008, 10:28 PM
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Replies: 15
Views: 2,989
Could there be a small variation in rifling...
Could there be a small variation in rifling twist, say 1:8.5" or something? There is often some rifling variation in the production process, with some 1:8 barrels being under 1:8 and some being...
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