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question about +p loads....

Discussion in 'Handloading and Reloading' started by SSN Vet, Jan 28, 2007.

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  1. SSN Vet

    SSN Vet Member

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    would the max. 'do not exceed' loads from modern re-loading manuals be considered "+P" loads?

    or do +P loads exceed the SAMMI pressure specs.?
     
  2. Sunray

    Sunray Member

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    "...exceed the SAMMI pressure specs..." Nope. There's a SAAMI spec for them too. Max loads are for the specific cartridge and bullet using a particular powder.
     
  3. Steve C

    Steve C Member

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    Most manuals list +P loads for the .38 spl generally because of the variable types of firearms chambered for the round. Some of these definitely should not be shooting +P ammo.

    You can achieve +P velocities in the 9mm with listed loads. Just compare the factory balistics with the manuals or your own results over the chrono.
     
  4. Clark

    Clark Member

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    There are +P pressures registered with SAAMI:

    .257 Roberts +P 58,000 psi
    257 Roberts +P 50,000 cup

    9.mm Luger +P 38,500 psi

    38 Super Auto +P 36,500 psi
    38 Super (+P) 33000 CUP

    .38 Special +P 18,500 psi

    In all cases it seems to be a 10% boost in maximum average pressure over non +P.
    The term "+P+" on commercial 9mm Luger ammo is undefined by SAAMI.
     
    Last edited: Jan 29, 2007
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