Re: 1911 460 Rowland
I have run 460 Rowland spec ammo in my Glock21C and my buddys HK USP45.
185xtp on top of 12gr Longshot at ~1500fps
230xtp on 10gr Longshot at ~1250fps
Stiff recoil, hits steel like a sledgehammer
Don't see any useful purpose though, other than to say I've done it. For any "practical" purposes, a 10mm with 200-220gr pills will hang with it, have higher capacity and penetrate better.