Standard +P ammo is rated to have a Maximum Average Pressure of 19,900 PSI. Maximum Absolute pressure is 21,900 PSI. +P+ can run up to 25,000 PSI. Within limits for modern guns, even newer alloy models, but poison in pre war Smiths and pre-1926 Colt's.
Some ammo, like Buffalo Bore and out-of-business Blue Bunny Ammo, produce or produced 38 SPL ammo with pressures approaching 25,000 PSI.
Not for continuous use in small frame guns, but at $1+ per shot, that is not a problem.
Remmie GS? They use a slow burning powder to keep pressures down. Great ammo, but LOUD with a huge muzzle flash.