.32-20 Revolver Question.

Discussion in 'The Ammo & Reloading Forum' started by artabr, Dec 9, 2009.

  1. artabr

    artabr New Member

    Are the .32 S&W & the .32 S&W Long safe to fire in a .32-20 revolver (Colt Police Positive)?

  2. Alpo

    Alpo Well-Known Member

    Feb 3, 2007
    NW Florida
    It's not a good plan.

    Base dimensions of a 32/20 are .354. Same area, on a 32 S&W, is .337. That's a lot of difference. Brass will probably rupture.

    The pressures are low enough that, if the brass does not rupture, it will not hurt the gun. The bullet is the same size, so that's not a problem. But if the brass ruptures you have hot gases flowing, in a revolver chamber that is open at both ends. That, in my opinion, is asking for pain.

    32/20 dimensions
    32 S&W dimensions

    In my opinion, the answer is no.

  3. artabr

    artabr New Member

    I was just fixing to post that I had found my answer. I was able to dig up some old cases and I took some measurements.
    The gun was a buddy of mines dad's who has passed away. He had a bunch of .32 S&W & .32S&W Long ammo and a .32-20 gun, but no .32-20 ammo. :confused: :rolleyes: :D

    As a matter of fact, the .32 S&W round that I had gotten from him is unfired, but has had a primer strike. Gee, I wonder why. :rolleyes: :D

    Thanks for the quick reply, Alpo. ;) :)

    Last edited: Dec 9, 2009
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