Good info. Would also suggest

by guest, Tuesday, January 14, 2020, 10:22 (1557 days ago) @ ~JM~

doing a search on Spanish proof and their idea of 9mm test pressures both working and max, and compare that to our SAAMI for standard and +P. Will need to brush up on metric conversion. But, the only sure way to know what the gun meant to take.

And, as always, self loaders are weighted and sprung to give positive function with minimal battering in a narrow range of pressure, and going outside that will always accelerate wear and shock. A heavier spring might be used, but that only moves the shock the opposite direct to closing rather than opening.