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Green Mountain .45ACP Barrel Blank?

Discussion in 'Gunsmithing and Repairs' started by jkpq45, Oct 3, 2012.

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  1. jkpq45

    jkpq45 Member

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  2. rcmodel

    rcmodel Member in memoriam

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    I would think it would handle the pressure.
    But the twist rate might be a little fast for either of the Magnums.

    The GM barrel is 1/16.
    .460 S&W is 1/20 gain twist.
    .454 is often 1/24.

    rc
     
  3. jkpq45

    jkpq45 Member

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    .45 Colts can be 1 in 16 or 1 in 38, as I recall--all depends on the manufacturer.

    So, with a faster twist, would I want lighter bullets? Say in the 250-300gn range for either .454 or .460?
     
  4. rcmodel

    rcmodel Member in memoriam

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    Faster twist will handle heavier bullets.

    Probably will make no differance with lighter bullets as you really can't over-stabilize them.

    It could increase pressure with max loads though.

    rc
     
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