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7.62x54mmR

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7.62x54mmR
Assortment of 7.62x54R rounds
Type
Rifle
Placeoforigin
Russian Empire
Service history
In service
1891resent
Used by
Soviet Union, former Warsaw Pact
Wars
Russo-Japanese war, World War I, Russian civil war, World War II, Korean war, Vietnam war, Afghanistan, Yugoslav wars, Gulf Wars,Iraq
Production history
Designed
1891
Produced
1891resent
Specifications
Casetype
Rimmed, necked
Bulletdiameter
7.92mm (0.312in)
Neckdiameter
8.53mm (0.336in)
Shoulderdiameter
11.61mm (0.457in)
Basediameter
12.37mm (0.487in)
Rimdiameter
14.40mm (0.567in)
Rimthickness
1.6mm (0.063in)
Caselength
53.72mm (2.115in)
Overalllength
77.16mm (3.038in)
Case capacity
4.16 cm3 (64 gr H2O)
Riflingtwist
240 mm (1 in 9.45 in)
Primertype
Berdan or Boxer Large Rifle
Maximum pressure
390MPa (57,000psi)
Ballistic performance
Bullet weight/type
Velocity
Energy
9.7g (150gr) Norma
900m/s (3,000ft/s)
3,939J (2,905ftbf)
10.9g (168gr) Barnaul FMJBT
812m/s (2,660ft/s)
3,593J (2,650ftbf)
11.7g (181gr) Norma Soft Point
785m/s (2,580ft/s)
3,605J (2,659ftbf)
Source: Chuck Hawks Accurate Powder Steves Pages

Chinese copper-washed, steel-cased, corrosive-primer 7.62x54mmR cartridge.

From left to right: Sellier & Bellot hollow point boat tail, "Czech silver tip", mild steel core, light ball, Hungarian silver/yellow-tip, mild steel core, heavy ball, Wolf Gold soft-point, USSR 1986 steel core light ball, Factory 60, Yugoslav surplus (1953), USSR 1940s lead core light ball
The 7.62x54mmR rifle cartridge is a Russian design dating back to 1891. Originally designed for the Mosin-Nagant rifle, it was used during the late Tsarist era and throughout the Soviet period, in machine guns and rifles such as the SVT-40. The Winchester Model 1895 was also chambered for this cartridge per a contract with the Russian government. It is still in use by the Russian military in the Dragunov and other sniper rifles and some modern machine guns such as the PKM. The round is colloquially known as the "7.62 Russian". The name is sometimes confused with the "7.62 Soviet" round, which refers to the 7.62x39mm cartridge used in the SKS and AK-47 rifles.
Contents
1 Background
2 Cartridge dimensions
3 Performance
4 Surplus ammunition
5 Factory ammunition
6 Synonyms
7 See also
8 References
9 External links
//
Background
The 7.62x54mmR is the oldest cartridge still in regular combat service with several major armed forces in the world. This round is mainly used in the Dragunov sniper rifle and PK machine gun. In general performance, it is in the same class as the .30-06 Springfield. Because of its ballistic closeness with the iconic American cartridge, a similarly rich military and historic heritage and amazing longevity, is often nicknamed "The Russian 30-06". It is also one of the few (along with the .22 Hornet, .30-30 Winchester and .303 British) bottlenecked, rimmed centerfire rifle cartridges still in common use today. Most of the bottleneck rimmed cartridges of the late 1880s and 1890s fell into disuse by the end of the First World War.
The 7.62x54mmR originally had a 13.7 g (210 grain) round-nosed full metal jacket (FMJ) bullet. Due to experiences in the Russo-Japanese War, it was replaced in 1908 with a 9.7 g (148-grain) spitzer FMJ bullet, which has remained standard to the present. To increase accuracy, the Dragunov SVD uses the 7N1 variant of the cartridge, which uses extruded instead of ball propellant and has a 9.7 g (152-grain) boat-tailed FMJ bullet. The 7N14 is a new load developed for the SVD. It consists of a 9.7 g (151 grain) projectile which travels at the same 850 m/s (2723 ft/s), but it has a lead core and is supposed to be the more accurate of the two.
The cartridge case presents a pronounced tapering to facilitate case extraction. In addition to being one of the first military rounds to use smokeless powder, the 7.62x54mmR was ahead of its time for another aspect, despite being a rimmed cartridge. The case is significantly wide in relation to its length and it features a rather sharp shoulder angle compared to other contemporary rounds. This characteristic and the case tapering allow for efficient and very rapid powder combustion, a design concept reintroduced again with the Short Magnum rifle cartridges more than 100 years later.
Large quantities of 7.62x54mmR military ammunition were made with steel cartridge cases. These perform well, but do not lend themselves nearly as easily as brass cases to the re-sizing necessary for...(and so on)

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