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What twist?

hadjiihadjii Member Posts: 961 ✭✭
edited July 2014 in Ask the Experts
I'm wanting to put together a 6.5-06 and wondering what twist would be
best for using 100-125 gr. bullets? Plan on having the barrel be 26
inches. Any thoughts would be appreciated. Thanks.

Comments

  • tsr1965tsr1965 Member Posts: 8,682
    edited November -1
    1 in 8 or 8.5 would be good, for those weights. However the 1 in eight would work with the 140's, and possibly the 160's
  • charliemeyer007charliemeyer007 Member Posts: 7,351 ✭✭✭
    edited November -1
    One of my favorite rifles as a kid was dad's 256 Newton QT built by A&M. It would shoot really well with 87 to 180 grain bullets. I think the twist rate was 1 in 7.5 thus the Quick Twist. I haven't seen bullets bigger than 160 grain for sale in years.

    added http://kwk.us/twist.html
  • XXCrossXXCross Member Posts: 1,298 ✭✭✭
    edited November -1
    If you want to know the twist for a particular bullet weoght
    in a given caliber, google the greenhill formula and do the math.
  • nononsensenononsense Member, Moderator Posts: 10,325 ******
    edited November -1
    hadjii,

    Those are light to intermediate weight bullets so they require only a mild twist rate if those are the only bullets you want to shoot.

    1:10" is sufficient for these but if you ever decide to go longer (heavier) you'll need something in the range of 1:9", 1:8.7" or even 1:8.2" which we use for Match bullets, VLD's and Hybrids.

    Best.
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