In 2008, Ruger released a new Redhawk revolver chambered for the .45 Colt cartridge.
Since then, the company discontinued that model and introduced a new Redhawk that will run .45 Colt and .45 ACP. Seems like a win to me.
Let’s take a look at the original .45 Colt revolver and the new gun Ruger replaced it with.