When I used to live in the States I tried handgun hunting. Honestly I don't why everyone is hung up on doing it. For the most part it's a dumb idea especially with an antique handgun. If your not using a high power large caliber handgun round like a 44 mag just go home because all your going to do is hurt the game if you actual manage to hit anything. IMHO, it's extremely difficult to hunt with handgun compared to rifle, not unlike bowhunting with similar effective ranges.
I agree in principle, though delivering a coup de grace with a .455 Welbey is still interesting in theory.