 The case design was inspired by the .416 Rigby cartridge and features a belt and Weatherby’s signature double-radius venturi shoulder.Unlike the .416 Ruger and the .416 Remington, the .416 Weatherby Magnum requires an extra-large bolt face and large magnum action to contain the cartridge due to its oversized dimensions.Putting this in perspective, the .416 Weatherby Magnum has a case capacity of 140 gr.