NO-NO-NO-NO!!!
My Brother-Inlaw's 1943 Mauser P-38 cracked slide from firing Std Velocity 9mm ammo.
Think "METAL FATIGUE". A WWII German P-38 pistol is approx 70 years old. Yes the Nazis did use "Hot" SMG ammo in the 9mm handguns. The handguns were just a few years old. That was then and now it is 70 years later.
Jimmy