06-15-2014, 04:55 PM
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#1 (permalink)
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A True Z Fanatic
Join Date: May 2013
Location: Columbus, OH
Posts: 5,051
Drives: 2013 Silver 370z
Rep Power: 3391
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Quote:
Originally Posted by SouthArk370Z
Any particular reason for such a "fast" twist? Are you shooting heavy bullets? Because of the short barrel?
Just curious. I have a 14-15" 5.56 with 1:10 that works well with all but the heaviest (70 gr) bullets.
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No idea, its what sig runs. My guess is you're correct. Small barrel needs at least one full twist and with the popular 62gr green tip everyone seems to be going lower/faster. I reload hornady match 68gr and 75gr and keep lots of green tip on hand. 55gr I just don't think has the kinetic energy so I'm glad for the 1:7 and heavy rounds.
Next gun will be a 300 blackout for all the split case necks I have.
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