.303 Magnum

The .303 Magnum is an obsolete medium bore rifle cartridge.

Overview The .303 Magnum was a bottlenecked centerfire rifle cartridge that was produced in both semi-rimmed and rimless versions. The cartridge fired a projectile of at . The cartridge's case capacity was the same as the .30-06 Springfield, although performance was considered to favour the .303 Magnum.

The .303 Magnum was developed by W. J. Jeffery & Co. by necking up the experimental .276 Enfield to , it was introduced in 1919 for target shooting and was used for some time by the British Match Rifle Committee. The cartridge had a brief life, only appearing in the Kynoch catalogue until 1930 and it appears to have become obsolete by 1932.

See also .303 British 7mm rifle cartridges List of rifle cartridges

References

External links Cartridgecollector, ".303 Magnum Rimless", cartridgecollector.net, retrieved 16 December 2016. Cartridgecollector, ".303 Magnum Semi Rimmed", cartridgecollector.net, retrieved 16 December 2016.