The .350 Rigby and .350 Rigby No 2 are both bottlenecked centerfire rifle cartridges, originally both cartridges fired a bullet of .358 inches (9.1 mm) weighing 225 grains (14.6 g).
[1][3] The .350 Rigby, also known as the .350 Rigby Magnum and the .350 Rigby Nitro Express, is a rimless cartridge intended for use in Mauser magnum length bolt action magazine sporting rifles, it fires its bullet at a muzzle velocity of 2,625 feet per second (800 m/s).
[1][3] John Rigby & Co introduced both cartridges in 1908, intended for use as an all-round African hunting rounds, they were somewhat overshadowed by the arrival of the .375 Holland & Holland in 1912, although some sportsmen preferred these cartridges to the latter as the Rigby cartridges had less recoil.
[1][2][4] The .350 Rigby and .350 Rigby No 2 have been used successfully as general purpose African hunting cartridges on most African game species.
[3] Famous users included Denys Finch Hatton, Pete Pearson and John "Pondoro" Taylor.