I'd learn more about ammunition; www.saami.org
FWIW; many owner's manuals like SIG Sauer & M&Ps state not to shoot +P+.
My local PD issues the SIG P226R in 9x19mm, the police use Ranger T 127gr +P+ JHP.
If you do plan to use +P+ , it may wear out your pistol faster but it's potent stuff. It could void the service warranty too.
I've used Ranger T in the past & would buy the impressive Buffalo Bore +P+ 124gr FMJ FN for spare pistol magazines/limited use.
I wouldn't shoot 100s of +P+ rounds but it has some value.