264 Mag - 140 Berger -Twist rate

Discussion in 'Reloading' started by rkcolt45, Aug 21, 2012.

  1. rkcolt45

    rkcolt45 Active Member

    Mar 18, 2011
    I just built a 264 mag with a #8 contour Krieger with a 1:8.5 twist. Has anyone had any experience loading this bullet (140gr Berger hunting VLD) with this twist? I was wondering if it would stablize it. The berger site recommends a 1:8 twist for the 140gr hunting VLD. Thanks, Ron
    Last edited: Aug 21, 2012
  2. rscott5028

    rscott5028 Well-Known Member

    Apr 18, 2010
    1:8" twist will be plenty good

  3. Trnelson

    Trnelson Well-Known Member

    Feb 15, 2012
    IMO you should be good to go. The difference in RMP between an 8.5" twist and an 8" twist is only 16,141RPM or 269 Revolutions per second with a MV of 3,000 FPS, which is very attainable for a 264 Win Mag with even a 24" barrel. An 8 twist is ideal, but IMO you should still be inside the envelope of stability. FWIW I shoot the 140 Berger VLD hunting bullet out of my 6.5/06 with a 9 twist at 2,900 FPS and shoot consistent .6MOA. Without a doubt when I re-barrel the rifle it will get an 8 twist but for now I'm ok with it as a hunting gun. YMMV
  4. J300UM

    J300UM Well-Known Member

    Dec 17, 2007
    A few years back, I spoke with Jeremy Winters (former BOTW staff) at the Denver Sportsman's Expo about the twist they were running in their 6.5-284. He said they were only using a 9 twist. They shot just fine in my old 264wm barrel with a 9 twist. I have since gone to an 8 twist.
  5. Bart B

    Bart B Well-Known Member

    Dec 25, 2005
    I wore out a .264 Win. Mag. barrel shooting Norma 139-gr. FMJBT nickel plated match bullets in its 1:10 twist. 'Twas very accurate for 640 rounds then went from 1/2 MOA at 600 yards to 2 MOA in three shots. Its throat had eroded far enough that bullets were barely held by the case neck to just touch the lands when seated.
  6. trebark

    trebark Well-Known Member

    Jan 16, 2008
    8.5 twist will stabilize the 140vld just fine.