"...can you possibly concieve of how much game was taken all over the world with black powder loadings of .45-70, or .45 cal muzzel loaders? The ballistic performance of a modern .45 ACP is far greater than that wonderful old cartridge. As for the 1911, many, many of these weapons are more accurate than a trapdoor springfield ever thought about being."

I don't think the .45 ACP fired out of a 1911 handgun is the equal for hunting in any way to a 45-70 fired out of a Trapdoor Springfield, let alone far greater. The rifle is going to give you higher muzzle velocity, a greater bullet weight, and a longer sight radius. I think the old time buffalo hunters, handed a tricked-out IPSC .45, would have thought it was pretty nifty--for combat. If you then suggested they go out and kill big game with it they would have had a pretty good laugh and stuck with their old rifles.

Regards, Vince