+ P

This is a discussion on + P within the Defensive Ammunition & Ballistics forums, part of the Defensive Carry Discussions category; Pardon my naivete, but what does the + P designate? My questions hopefully will get less basic as my reading continues. Purchased a couple of ...

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Thread: + P

  1. #1
    New Member Array SiSiRider's Avatar
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    + P

    Pardon my naivete, but what does the + P designate?

    My questions hopefully will get less basic as my reading continues. Purchased a couple of books over the weekend, as suggested on this forum. Interesting stuff. Was able to purchase only 4 boxes of American Eagle 115gr fmj. It was my third store.

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    VIP Member Array hogdaddy's Avatar
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    + pressure / Make sure your gun will take a steady diet of them
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    +P stands for Plus Pressure.
    +P+ is hotter still.

    The +P designation is a classification term for over stantard pressure/power ammunition.
    Greater than standard loadings but, less than a "proof" test cartridge.

    On Average - 9mm +P + 10% pressure increase, .38 Special +P = 9% pressure increase, .45 ACP +P = 9.5% pressure increase

  5. #4
    jfl
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    Yes +P stands for pressure.
    +P loads are loaded to higher pressures than the SAAMI standards for that caliber, meaning that they should not be used in some older guns.

    These loads yield higher velocity which translate in higher energy: a 15% increase in velocity will give approximately 30% more energy (energy increase as the square of velocity).
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    Great addition jfl.

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    +P can also mean 'sore hand/wrist'.
    +P+ many mean 'really sore hand/wrist'...
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    VIP Member Array frankmako's Avatar
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    Quote Originally Posted by retsupt99 View Post
    +P can also mean 'sore hand/wrist'.
    +P+ many mean 'really sore hand/wrist'...
    plus one on that.
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