9mm NATO is rated at 36,500 PSI. SAAMI puts 9mm standard pressure at 35,000. 9mm NATO barely qualifies as a +p round being just 1500 PSI over standard loadings and 2000 PSI below the +p pressure limit.
Fun fact: STANAG 4090 which established the 9mm NATO round as standard was ratified in 1962 with NATO qualification first happened in 1964.
NATO pressures for 9mm can be anywhere between 33,300 to 38,500 psi, according to STANAG 4090.
SAAMI pressures are 35,000 max average to 37,800 psi max probable.
NATO pressures are not that much hotter, certainly not in the P+ range.
STANAG 4090 was not ratified by NATO until Spain formally adopted the round in 1991.
Individual nation ratification dates:
Belgium, Canada, Denmark, Germany, Norway, Turkey, UK - 1962
Greece - 1963
France, Italy, Holland - 1964
Luxembourg - 1965
US - 1984
Spain - 1991
Portugal - 1994
You will get a different poi as the nato round uses a 124 gr bullet versus the usual 115 gr 9mm load.
STANAG 4090 allows 9mm bullet weights anywhere from 108 gr to 128 gr, with a required muzzle energy of 400 ft-lbs to 600 ft-lbs (fired from a 7.85 inch test barrel). That's anywhere from anemic to fairly warm when fired from the usual 4 to 5 in pistol barrel.