Thank you, Mr. Jarrett for the informmation.
Jimmy
Jimmy
You have a M25-5 barrel and what appears to be a Wondersight for a rear sight. If your cylinder currently chambers .45 ACP, you will have to find a .455 cylinder and have it rechambered to .45 Colt. That will be expensive to have it fitted correctly.
If I were you, I'd stick with what you have. Also, a rechambered cylinder will be kinda short for some .45 Colt reloads.