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300px-762x39 - fmj - 1-1-
7.62x39mm
Country of origin

Soviet Union

Year(s) designed

1944

Year production began

1944

Cartridge type

Rimless; bottlenecked

Overall length

56.00 mm (2.205 in)

Case length

38.70 mm (1.524 in)

Neck diameter

8.60 mm (0.339 in)

Shoulder diameter

10.07 mm (0.396 in)

Base diameter

11.35 mm (0.447 in)

Rim diameter

11.35 mm (0.447 in)

Rim thickness

1.50 mm (0.059 in)

Rifling twist

240 mm (1:9.45 in)

Muzzle velocity

730.3 m/s (2,396 ft/s) to 738.0 m/s (2,421 ft/s)

Primer type

Berdan or Boxer Large rifle

The 7.62×39mm (also known as 7.62 Soviet or .30 Russian Short) round is a Soviet round used originally for the RPD, and was later used for the SKS and AK-47.

Design detailsEdit

The Russians simply took their old rifle round and shortened it. Coming up with this new intermediate rifle cartridge was to help lighten the load on a soldier carrying the new SKS carbine and reduce the recoil. Most, if not all, 7.62mm Soviet cartridges are Berdan primed.

VariantsEdit

Different variants of the 7.62×39mm round.

MilitaryEdit

M43Edit

The M43 round, with its 124 grain full metal jacket bullet has a muzzle energy of 2010 J when traveling at 715 meters (about 2300 ft) per second. It has a mild steel insert on the inside of the bullet, with a layer of lead beneath the copper-plated steel jacket. However, it is one of the poorest performers in terms of terminal performance; its deep penetration, while working very well against cover, does little damage on flesh unless it hits a part of the central nervous system.

M67Edit

The M67 round, produced by Yugoslavia in the 1960s, does not have the mild steel insert that M43 has. This causes the projectile to have a center of gravity that is not in the center of the projectile while in flight, increasing its chances of yawing upon impact and producing a larger wound than M43 would.

CommercialEdit

Commercial manufacturers of 7.62×39mm generally have various FMJ rounds on the market. Most weigh around 122-124 grains, and are generally steel-cased and Berdan primed.

8M3Edit

Modified M67 with a ballistic tip, increasing chance of fragmentation.

158-grain 7.62mm SovietEdit

These are usually jacketed hollow point rounds. Effectiveness of the hollow point design may vary, and are usually sold under the Herter's brand.

See AlsoEdit