During the 1970’s Elgin Gates looked at the line-up of currently available Magnums and decided longer would be better and designed a series of new Magnum cartridges which were dubbed SuperMags and were 1.60″ in length, or about three-tenths of an inch longer than standard Magnum cartridges, requiring the production of a totally new revolver with a longer frame and cylinder. At the time he made up SuperMag cartridges in .357, .375, .44, .45, .50, and .60 caliber with the 460 being a rimless design. The SuperMag series of cartridges did become a reality in the 1980’s through the collaborative efforts of Gates and Dan Wesson Arms. Cases were made by Bertrams in Australia.