Converting a 300WM to 257Wby

Discussion in 'Gunsmithing' started by mtelkhntr78, Jul 25, 2011.

  1. mtelkhntr78

    mtelkhntr78 Well-Known Member

    Dec 30, 2008
    I have a 300 Win mag that has a burnt out barrel. The rifle is a Model 70 and I was thinking of putting a new barrel on it. Except this time I was thinking of getting a barrel for a 257 Weatherby put on it. My questions are:
    Will this work?
    Can I just do the barrel swap from 300WM to 257 and have everything(magazine, bolt face,etc) work for it?
  2. TRG300WM

    TRG300WM Well-Known Member

    Jun 20, 2011
    I have both these cartridges and both have .532 Bolt face. I would say it would work through the mag box as well and if not, it wouldn’t take much to make it work.

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