The 45 Stark was developed by Bruce Stark around 2012 and is a 45 Win Mag case that was lengthened by .100-inch to a total of 1,298-inch and an overall length of 1,60 inches and can almost be described as a ‘45 ACP Magnum’. Cases were made for him by Quality Cartridge. The 45 Stark is used in converted Auto Mag pistols.