jski, whatever the actual pressure, I have used a fair amount of 9MM +P+ in a variety of semi-autos and revolvers. That would include Winchester 115 and 127 grain +P+, Federal 115 +P+, and Remington 115 +P+. I've also used the new Winchester M1152 115 grain flat point ball ammo, created for the military, that I suspect is loaded to similar pressures since chronographed velocities are similar to +P+ ammo of the same weight. I have not torn any 9MM pistols to pieces. Actually, I've not experienced any broken, bent, or deformed parts, nor have I been able to detect any premature wear.
FWIW, CorBon 115 grain JHP ammo, only rated as +P, routinely produces velocities equal to or higher than any of the +P+ I've chronographed. The CorBon I've used was manufactured prior to CorBon's change of ownership, so I don't know how the current owner's ammo performs...