Goony: S&W would not put .455 COLT on the gun and Winchester would not call their cartridge ELEY so Winchester called the cartridge .455 Colt. From what I have found most of the Winchester .455 Colt cartridges were shipped to Canada. I have a photo of the .455 Colt box and I have found 2 rounds with WRA .455 head stamp. Dominion cartridges in .455 Colt are eazier to find.