The current pistol (L9A1) is basically an off the shelf FN High Power. They’re being replaced, in part, because the current issue 9mm NATO loading is beating the hell out of them.
The Browning Hi-Power should handle the hot rounds as well as anything.
Back in the 70’s the government had the HP White firm test all handguns for safety. These tests including shooting a lot of proof level loads.
The tests were clearly too difficult to pass, probably on purpose. I do recall the Browning Hi-Power was one of the few to make it through with no damage.