.303 British
| .303 British | |
|---|---|
|
|
| general information | |
| caliber | .303 British, 7.7 × 56mm row |
| Sleeve shape | Rim cartridge |
| Dimensions | |
| Sleeve shoulder ⌀ | 10.19 mm |
| Sleeve neck ⌀ | 8.58 mm |
| Floor ⌀ | 7.87-7.93 mm |
| Cartridge bottom ⌀ | 11.68 mm |
| Sleeve length | 56.44 mm |
| Cartridge length | 77 mm |
| Weights | |
| Bullet weight | 8.1-11.7 g (125-180 grain ) |
| Powder weight | 2.43 g |
| total weight | 24.9-25.4 g |
| Technical specifications | |
| Speed v 0 | 740 m / s |
| Bullet energy E 0 | 3200 y |
| Lists on the subject | |
The .303 British cartridge (metric designation 7.7 × 56 mm R ) is a rim cartridge developed around 1888 for the armed forces of the United Kingdom of Great Britain and Ireland .
history
For the rifles of the Lee-Metford Magazine Rifle, Mark I types developed and produced at the Royal Small Arms Factory , a magazine was provided for the first time in British army rifles . Therefore new ammunition was needed.
This was the .303 Lee-Metford type with a nickel-plated full jacket round head bullet weighing 13.9 g. First equipped with a propellant charge of black powder , the cartridge was switched to a cordite charge of 2.05 g as early as 1892 .
In 1895 the Lee-Metford rifles were by the Rifle, Magazine, Lee-Enfield Mark I replaced.
In 1911 the cartridge was revised and given a pointed bullet. Since then, the manufacturer has referred to them as the .303 British Lee-Enfield Mk.7 .
Although the edge of the case could cause interference in repeating rifles , it was also used in various machine guns ( Bren , Hotchkiss, Browning (aircraft version), Maxim , Vickers , Lewis , Madsen). As a result, other countries also used the cartridge. These included Japan, Canada, Portugal, Russia, Turkey and the USA.
In rifles ( rifles ), the cartridge was mainly used in Commonwealth countries. While the British Army no longer uses it, it is still used by the military and police in many other states.
Web links
- Educational Zone # 30 - The Smell of Cordite. In: theboxotruth.com. The Box O 'Truth, June 13, 2014, accessed November 20, 2015 .
- Ammunition for Armor-Testing WW2 303. In: conjay.com. Retrieved November 20, 2015 .
- Mel Ewing: Sniping Cartridges - 7.7x56mm R (.303 British) - Sniper Central. In: snipercentral.com. October 13, 2014, accessed November 20, 2015 .
- Dave Cushman: Headstamps of the .303 British Caliber Service Ammunition Round. In: dave-cushman.net. Retrieved November 20, 2015 .