By the way, eventhough Rigby had Mauser make the original step ring magnum action for the 400/350 and used the magnum action with the full width receiver ring for the 350 magnum (and 416), the 350 magnum cartridge fits quite nicely into the standard length action and magazine. If I were thinking of a medium bolt gun, a 350 Rigby Magnum on a commercial action would be at the top of the list.