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The .303/22, sometimes known as the .22/303, is a wildcat centrefire rifle cartridge based on the .303 British, necked down to fire a .224 projectile, originating in Australia in the 1930s as a cartridge for sporterised rifles, particularly on the Lee–Enfield action. Similar versions also appeared in Canada around the same time. [3]
The .303/25, sometimes known as the .25/303 is a wildcat centrefire rifle cartridge, based on the .303 British, necked down to fire a .257 projectile, originating in Australia in the 1940s as a cartridge for sporterised rifles, particularly on the Lee–Enfield action; similar versions also appeared in Canada around the same time.
The .276 Enfield was designed with the intent of being more powerful than the .303 British cartridge used in the Lee–Enfield rifles and to be at least similar in size and performance to other large, powerful early 20th century military rifle cartridges, like the .280 Ross, 7.92×57mm Mauser, .30-06 Springfield and 7.5×55mm Swiss GP11.
.303 British cartridges, along with the Lee–Enfield rifle, were heavily criticized after the Second Boer War. Their heavy round-nosed bullets had low muzzle velocities and suffered compared to the 7×57mm rounds fired from the Mauser Model 1895. The high-velocity 7×57mm had a flatter trajectory and longer range that excelled on the open ...
The P14's principal combat use during World War I was as a sniper rifle, since it was found to be more accurate than the Short Magazine Lee–Enfield, either in standard issue form or with modified "fine-adjustment" aperture rearsights designated Pattern 1914 Mk I W (F) and Pattern 1914 Mk I* W (F) or, from April 1918, [2] Aldis Pattern 1918 ...
The designation was changed to Rifle, Magazine, Lee–Enfield Mark I or MLE (magazine Lee–Enfield). The sights also had to be changed to reflect the flatter trajectory and longer ranges of the improved cartridge. The Martini–Henry, Lee–Metford, and Lee–Enfield rifles have an overall length just under 50 inches (1,300 mm).
The M1917 Enfield, the "American Enfield", formally named "United States Rifle, cal .30, Model of 1917" is an American modification and production of the .303-inch (7.7 mm) Pattern 1914 Enfield (P14) rifle (listed in British Service as Rifle No. 3), which was developed and manufactured during the period 1917–1918.
The rifle was distributed to the army as the Rifle, Magazine, Enfield, .276-inch. The troop trial rifles left handed rifling twist rate was 10 in (254 mm) , 5 grooves, groove depth .005 inches (0.127 mm) land width .09352 inches (2.375 mm). The trials took place in Britain, Ireland, Egypt and South Africa and at the end, the Chief Inspector of ...