Ohhhh. Fair enough!
The +P+ designation is not currently used by the SAAMI, but is used by some manufacturers to designate loads that exceed the +P SAAMI specification(38,500 psi). One source lists the 9 × 19 mm +P+ loading as having a pressure of 42,000 psi, an 18% increase over the standard pressure of 35,000 psi.
Keep an eye on your mag followers. I think just NATO rounds busted mine.
. My PM9 has over 40,000+ rounds through it, and runs much better than an illegal trying to get across our border
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