The .303 is an arguably obsolete but capable medium bore rifle
cartridge.
Overview
The .303 Magnum was a bottlenecked
centerfire
Two rounds of .357 Magnum, a centerfire cartridge; notice the circular primer in the center
A center-fire (or centerfire) is a type of metallic cartridge used in firearms, where the primer is located at the center of the base of its casing (i. ...
rifle cartridge that was produced in both
semi-rimmed and
rimless
A rim is an external flange that is machined, cast, molded, stamped, or pressed around the bottom of a firearms cartridge. Thus, rimmed cartridges are sometimes called "flanged" cartridges. Almost all cartridges feature an extractor or headspaci ...
versions. The cartridge fired a projectile of at . The cartridge's case capacity was the same as the
.30-06 Springfield
The .30-06 Springfield cartridge (pronounced "thirty- aught-six" ), 7.62×63mm in metric notation, and called the .30 Gov't '06 by Winchester, was introduced to the United States Army in 1906 and later standardized; it remained in military us ...
, 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
Kynoch was a manufacturer of ammunition that was later incorporated into ICI, but remained as a brand name for sporting cartridges.
History
The firm of Pursall and Phillips operated a 'percussion cap manufactory' at Whittall Street, in Birmin ...
catalogue until 1930 and it appears to have become obsolete by 1932.[
]
See also
* .303 British
* 7mm rifle cartridges
* List of rifle cartridges
List of rifle cartridges, by primer type, Caliber, calibre and name.
File:Cartridge Sample 2.jpg, 350px, From left to right: 1 .17 Hornady Mach 2, 2 .17 Hornady Magnum Rimfire, 3 .22 Long Rifle, 4 .22 Winchester Magnum Rimfire, 5 .17/23 SMc, 6 5mm ...
References
External links
Cartridgecollector, ".303 Magnum Rimless", ''cartridgecollector.net''
retrieved 16 December 2016.
Cartridgecollector, ".303 Magnum Semi Rimmed", ''cartridgecollector.net''
retrieved 16 December 2016.
British firearm cartridges
Pistol and rifle cartridges
W. J. Jeffery & Co. cartridges
Weapons and ammunition introduced in 1919
{{ammo-stub