Yes. AR-style rifles can be had in .45 ACP, for example. There was also a .45 ACP variation made of the Uzi Model B (good luck finding one, though). And there are others, as well.
45 ACP can be used in both auto and revolver. The revolver must have a 45 ACP cylinder.
If it's chambered for the .45 ACP cartridge, yes.
The AMT 45 ACP is worth around 300 to 550 depending on the condition of the firearm
my opinion is the 45 ACP round has more knock down powder then the 40 caliber
NO
45 ACP. Have it checked by a gunsmith before firing.
The Model 17 is chambered for the .22 LR. The Model 1917 was chambered in 45 ACP
I would pay $1000 for this Pro Conceal .45 acp!
yes
if 45 acp is not stamped on the barrel of your rifle then it could be chambered for the 45 long colt cartidge which would be longer and with a different rim at the base of the cartridge. 45 acp rounds were made originally for auto loading pistols. to be on the safe side you should contact a knowledgable gun dealer with this question. DON`T take chances. shooting ammo in a gun that it is not designed for can be extremely dangerous.
I would try the maker of my rifle first.
Any of the major reloading books should have what you want.