Handguns
The fact that the .410 bore shell fits in a .45 Colt chamber has resulted in some unusual applications. While shotguns are often limited in minimum length, a firearm chambered in .45 Colt, such as the Contender pistol, is not defined as a shotgun even though it can chamber shotgun shells since the barrel is rifled, not smooth. American Derringer has long offered .45 Colt/.410 bore Derringers, and recently Taurus, Magnum Research, and Smith and Wesson began to offer revolvers with extended cylinders, chambered for .45 Colt but long enough to hold .410 shells as well. Magnum Research offers a single-action revolver in their BFR (Biggest Finest Revolver) line, while the Taurus Judge is similar in price to their other double-action revolvers, with one model of the Judge capable of chambering and firing the .454 Casull cartridge. The Smith and Wesson Governor is a double-action revolver also capable of firing .45 ACP cartridges with the aid of moon clips. The now discontinued MIL Thunder 5 was also chambered in .410-bore.
Other fireams makers, such as Bond Arms, offer various derringer models which chamber both .45 Colt cartridges and .410 shotshell.
Read more about this topic: .410 Bore