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+p SP101 .32 mag.

Discussion in 'Handguns: Revolvers' started by Dithsoer, Feb 20, 2007.

  1. Dithsoer

    Dithsoer New Member

    Mar 18, 2006
    Is the SP101 in .32 magnum the same frame size as the .357 magnum version? I have one in .32 H & R mag. and I've been working on some +p and +p+ versions of this cartridge. I reason that if this frame will handle .357 pressures it should certainly handle a higher-pressure version of the .32 mag. It's a shame that this great little cartridge was originally introduced in the weaker H. & R. revolvers with their 20,000 psi. limit. I'm an experienced handloader of 15 years and have been cautiously investigating this prospect. So far I've had some interesting results, including a 100 gr. j.h.p. at 1350 f.p.s. and, seriously, a 150 gr.,.310 diameter l.f.p. intended for the .30-30 that I've driven to 870 f.p.s., all with no signs of serious pressure problems. Does anyone else have any experience with +p .32 mag. loadings? I would be very interested in any data you may have.
  2. kevin387

    kevin387 New Member

    Dec 20, 2004
    I'm pretty sure the frame size is the same. I base that on the frame size being the same for the 22 and 357, it would make sense for the 32 as well. I know next to nothing about reloading but I don't see where any harm would happen as long as you kept pressures below that of 357.
  3. ArchAngelCD

    ArchAngelCD Senior Elder

    Nov 25, 2006
    Northeast PA, USA
    I wouldn't worry about the frame but the cylinder might be a totally different matter. Be careful because that will be your point of failure in this case.
  4. DWARREN123

    DWARREN123 Participating Member

    May 1, 2006
    Between TN & KY
    SP's have the same frames, some internal differences such as the transfer bars and cylinders. I load Hornady 100gr HP/XTP's to around 1300fps. Mine likes them hot and heavy. These rounds shoot well in my Marlin 1894CB also.

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