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Old July 1, 2013, 02:33 PM   #1
Noreaster
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Join Date: January 30, 2011
Location: New England
Posts: 1,449
Explain SAAMI pressure and wear on firearms

I found myself looking over my 40 cal pistols and comparing wear marks with my 9mm guns. I checked the SAAMI limits and 9mm & 40 S&W are the same, then I see 9mm +P is higher than 44 magnum, (38,500 vs 36,000.) The 357 Sig, (basically a 40S&W firing a 9mm bullet,) is higher than 10mm. So if I put a 31 barrel in my Gen 3 G22 I will have higher pressures than a G20 shooting a 10mm?What exactly does the SAAMI PSI mean in relation to firearm wear and tear.
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