A magnum cartridge is a firearm cartridge with a larger case size than, or derived from, a similar cartridge of the same projectile (bullet) caliber and case shoulder shape. The term derives from the .357 Magnum, the original revolver cartridge with this designation. For the purpose of this list, magnum cartridges will only be those labeled magnum and will not include cartridges with the power of magnum cartridges like .300PRC, nor wildcat cartridges such as .300 Lapua Magnum