rechambering????

Discussion in 'Gunsmithing' started by pdkillr, Dec 3, 2012.

  1. pdkillr

    pdkillr Member

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    Jul 14, 2008
    Can I turn a weatherby 257 into a 280AI just by replacing or rechambering the barrel? Is bolt and magazine going to work. If not what would be the closest and easiest to make a 280AI. Other than a 280 rem, don't have one of those.
    Thanks
     
  2. FEENIX

    FEENIX Well-Known Member

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    Dec 20, 2008
    Best and easiest is to re-barrel (not re-chamber a non .284 barrel) to .280AI, next is to re-chamber a .280 to .280 AI.

    Look at the first sticky on this forum on bolt face diameter courtesy of JE Customs.
     

  3. Jerry M

    Jerry M Well-Known Member

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    Aug 20, 2006
    Bolt face is different .532 bolt face for H&H based cartridges - .257 Weatherby Magnum; .473 bolt face for -06 based cartridges - .280 Remington or .280 AI.

    You could rebarrel with a 7mm Remington Magnum or a 7mm Weatherby Magnum barrel (which are both .284 bore diameter just like the .280s).

    To make your rifle into a .280 or .280AI you would have to replace the bolt and the barrel. That would not be cost effective in my opinion.