Hornady 7mm 139gr GMX??

Discussion in 'Reloading' started by DannoBoone, May 7, 2010.

  1. DannoBoone

    DannoBoone Member

    Messages:
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    Joined:
    Dec 10, 2007
    Has anyone tried these? Their website states compatible with
    conventional load data. Really? The bearing surface on these is
    looooong! In my 7mm WSM, there would be more bearing
    surface inside the case than in the neck! It appears the bearing
    surface is around .640, and I'm wondering if my 9 1/2 twist
    barrel will even stabilize them.

    For anyone who has tried them, do you get better accuracy with
    the bearing surface close to the lands, or loaded like a
    regular 139 Hornady at the book specs?