The .475 No 2 Nitro Express is a British rifle cartridge developed by Eley Brothers in the early 20th century.
The .475 No 2 Nitro Express is a rimmed bottle necked cartridge designed for use in single-shot and double rifles.
Jefferys built a very fine handling double rifle for this round with a 24 in (610 mm) barrel that weighed only 11 lb (5.0 kg) but retaining moderate recoil.
These large bore rifles proved very effective against the steel plates used by the Germans, in his book Sniping in France 1914-18, MAJ H. Hesketh-Prichard, DSO, MC stated they "pierced them like butter.
[1] In his African Rifles and Cartridges, John "Pondoro" Taylor stated the .475 No 2 Nitro Express is "an eminently satisfactory shell and a certain killer - but don't let yourself be hypnotised by that great fat gleaming shell into the belief that you have something comparable with the atomic bomb to play with!