Can you explain it to me

Discussion in 'Ammunition & Reloading' started by woody63m, Apr 20, 2012.

  1. woody63m

    woody63m New Member

    Whats the differnce +p and +p+ and all that other stuff i dont get it
  2. Jpyle

    Jpyle New Member

    Every cartridge has a standard SAAMI pressure loading so that gun manufacturers can build to a specific chamber strength. +p and +p+ rounds are loaded hotter than the standard and should only be used in guns capable of safely handling the additional pressures.

  3. c3shooter

    c3shooter Administrator Staff Member

    FWIW, there are only a few "real" +P loads- 9mm, .38 Special, .45 ACP, and ALL .38 Supers. Those are the rounds for which SAAMI established a +P load. They are loaded to about 17% higher pressures IIRC. While someone may CALL another cartridge a +P, there is no standard for other cartridges.

    The +P+ is loaded hotter than a +P, but again, there is no standard for that load- so in theory, you would load that up as a 2 times pressure load.

    SOME handguns- especially older ones, were not designed for the higher pressures. Unlikely to have an OMIGOD! kind of failure, but will cause accelerated wear on the gun.