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Then it is +P, according to SAAMI; the 124gr 9mm NATO round is +P, because it is "approximately 10-15% higher average pressure than industry standard for 9mm Luger" ammunition, and as such should only be fired in modern 9mm handguns designed to handle +P ammunition. So I wouldn't fire it in WW2 era 9mm handguns, but modern Beretta, SIG, Heckler und Koch, Walther, Glock*, post 1950s Browning P35 (Highpower) etc. should be able to handle it. As for your Smith: if there's nothing in the owners manual which addresses this issue (i.e. +P ammunition) I would contact S&W about this. We've all seen the horror photos of polymer framed handguns (*Glocks) that went "BOOM" and injured the shooter. While I'm sure a box of 50 might not lead to such a catastrophic failure, I would be sure before firing much more. Might just do a little damage that leads to something worse in the future. Anyway this is the advice I'd give my kids or friends, worth what you paid for it...
* not so sure about Glocks and +P.
 

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On another note: Back when I still owned and could afford to run my 9mm SMGs I would buy this stuff whenever I could find it; my open-bolt SMGs wouldn't function well with anything else. SubGunFan can testify to this. Occasionally the Great Wall would have some of this stuff for $9.99 / 50 and I'd buy all they had. So it's not bad, just be careful out there.
 

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Discussion Starter · #16 ·
This is what owner's manual says:
“Plus-P” (+P) ammunition generates pressures in excess of the pressures associated with standard ammunition. Such pressures may affect the wear characteristics or exceed the margin of safety. Use of “Plus-P” ammunition may result in the need for more frequent service. "
 

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This is what owner's manual says:
“Plus-P” (+P) ammunition generates pressures in excess of the pressures associated with standard ammunition. Such pressures may affect the wear characteristics or exceed the margin of safety. Use of “Plus-P” ammunition may result in the need for more frequent service. "
That's what I figured, they're trying to CYA in case of heavy wear (may result in the need for more frequent service") / a failure. I'd keep some in case you need ball ammo at +P for a situation, but otherwise for your pistol I'd stick with self defense rounds. Best of luck to you!
 

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This is what owner's manual says:
“Plus-P” (+P) ammunition generates pressures in excess of the pressures associated with standard ammunition. Such pressures may affect the wear characteristics or exceed the margin of safety. Use of “Plus-P” ammunition may result in the need for more frequent service. "
I'll still trade round for round for regular 9mm fmj if you are uncomfortable with it.
 

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HerrZnc

I've never seen a 9mm glock blown out. I have seen pictures of the 40 cal. The 40s&w chamber in the factory glock barrel leaves the case head unsupported. Hot hand loads or custom ammo can fail at the case web in the 40s.
Yeah I didn't want to take this into the weeds with the whole "GLOCKS BLOW UP!!" conspiracy theories. Just mentioning this is the only brand I've seen photos of, and read about (yes there are books about all the lawsuits against Glock by both private citizens and LE agencies) so I won't go there, just stating an opinion about my personal hesitancy to use NATO spec in a polymer frame. BTW see next post I'm putting in this thread.
 
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