can you use a ultra mag action on a magnum caliber

Discussion in 'Varminter & Hunting Forum' started by moa_shooter, Sep 20, 2019.

  1. moa_shooter

    moa_shooter

    Joined:
    Sep 19, 2019
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    can you use a ultra mag action on a magnum caliber or is the bolt face to big for magnum
     
  2. 284winner

    284winner Gold $$ Contributor

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    Dec 6, 2015
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    The RUM, Winchester, Remington and Weatherby magnums all use the same boltface which I believe is .540. I could be wrong on the size but they do all use the same boltface.
     
    300_whisper likes this.
  3. Rube Shooter

    Rube Shooter Gold $$ Contributor

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    Jan 26, 2019
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    I used the action originally chambered for 300 win mag to build my 338 edge, I hope to be putting a new barrel in original caliber on it next year.
     
  4. B23

    B23 Gold $$ Contributor

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    The bolt face will be the same, but I believe the Rem 700's that come from the factory chambered in RUM cartridges have different feed rails, so if this is a Rem 700 that came from the factory for a RUM cartridge and you now want to switch it something magnum bolt face but not a RUM size case, it's possible it could give you feeding issues. I don't know if other manufacturers do that or not.
     
    ebb likes this.

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