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Rob, 475 Linebaugh is only a little hotter than the .480. The .480 Ruger (12.1×33mmR) is a large, high-power revolver cartridge, introduced in 2003 by Sturm, Ruger and Hornady. The .475 Linebaugh was introduced around 1988 as a custom, 5-shot Ruger Blackhawk single-action revolver. The .475 is a wildcat cartridge made by cutting the .45-70 case to a length of 1.4 inches (36 mm), and necking it to accept a .475 bullet. The .475 Linebaugh is an immensely powerful cartridge, almost as powerful as the .454 Casull. Neither is up to the capabilty of the .45-70 even in a rifle