I was thinking of building a 8.6blk on a rem700, but I had supersonic loads in mind specifically. Running subs only in my semi currently. So what I'm really asking is, I can have the 1-3 twist or an optional 1-10 twist. What would be best for the caliber, running only supers in a bolt gun. And I have options from 12-26" in length in increments of every 2" also.
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