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The .303 British (designated as the 303 British by the C.I.P. [2] and SAAMI [3]) or 7.7×56mmR, is a .303-inch (7.7 mm) calibre rimmed tapered rifle cartridge.The .303 inch bore diameter is measured between rifling lands as is the common practice in Europe which follows the traditional black powder convention.
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 rifle was designed with an iron sight line consisting of rear receiver aperture battle sight calibrated for .303 British Mk VII ball ammunition at 300 yd (274 m) with an additional ladder aperture sight that could be flipped up and was calibrated for 200–1,000 yd (183–914 m) in 100 yd (91 m) increments and 1,000–1,650 yd (914–1,509 ...
It made 7.92mm Mauser, .30-06 Springfield, and 7.62mm NATO ammunition for the military and .303 British rifle ammunition for the civilian market. Packaging lists the date in the Ethiopian calendar year (7 to 8 years less than that of the Gregorian calendar ), while the cartridge headstamp uses the Common Era year.
T3 [6]: 68–70, Rule 150 However, many matches such as the NRA Imperial Meeting require competitors to use issued ammunition - which is typically only offered in .308. [15] The .303 British calibre is still in use by service rifle shooters and was exclusively used by in the Short, Magazine Lee–Enfield No.1 Mk. III and Lee-Enfield No. 4 rifles.
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 8×50mmR Mannlicher cartridge has a long history of sporting use in India, as it was a simple matter to modify the Lee–Enfield action to accommodate the 8×50mmR in place of the .303 inch cartridge, thus providing a solution to the British colonial administration's 1907 ban on civilians possessing rifles chambered in British military ...
.303 British machine guns (12 P).303 British rifles (1 C, 5 P) Pages in category ".303 British firearms" This category contains only the following page.