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Old November 1, 2009, 11:22 PM   #21
gyvel
Senior Member
 
Join Date: August 30, 2009
Location: Northern AZ
Posts: 7,172
Quote:
I think a 1:400 twist would be best...
And on a more serious note, is there any "regulation'" "ruling" or "mandate" that stipulates how deep the rifling has to be?
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