I did forget to mention, check out your state laws first, here in KS, the .45acp is legal for deer in a rifle only, not in handguns (we have a cartridge case length minimum law for handguns, but no such law for rifles/carbines, so a 16" carbine in 9mm built around the same action that the company puts out in it' s handguns is legal, while the handguns aren' t.

The .45acp doesn' t have a lot of muzzle energy, but at close ranges and on accurate shots, it doesn' t take a lot of energy to get the job done on a whitetailed deer...I' ve known lots of PH' s that take .45acp' s for boar back up, along with tactical shotguns usually, the hunter/client gets to carry the rifle or bow. They always affirm that the .45acp has plenty stopping power.