My Beretta 92FS manual says the same thing about +P+ loads. While most folks say it is a lawyer thing, I did find that Beretta M9s had a problem blowing off the slide on recoil when submachine gun loads were used rather than pistol ammo.

No idea how +P+ compares to submachine gun loads but I think I will pass on hot loads.

I bought the Beretta for gun games. If I need something serious I have a .45 ACP or a 460 S&W. Either will put some seriously heavy loads.