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Thread: Re-chambering a new factory bbl

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  1. #4
    Member chainsaw's Avatar
    Join Date
    Jul 2014
    Location
    CNI
    Posts
    6,016
    Yes 1:8 twist would be ideal but a 1:9 is fine for 160-168 gn pills. I’m tossing up ideas for a short (20in) bbl 7mm that’s got more legs than SAUM

 

 

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