5.6×39mm
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The 5.6×39mm, also known in the U.S. as .220 Russian, is a cartridge developed in 1961 for deer hunting in the USSR.[3] It fires a 5.6mm projectile from necked down 7.62×39mm brass. While it originally re-used 7.62x39 cases, once it became popular enough commercial ammunition started being manufactured, both in the USSR and in Finland.[4][5] When it was introduced to the United States by SAKO it was stamped .220 Russian. Lapua later changed the designation to .220 Russian for the American market as well.[6][5]
5.6×39mm | ||||||||||||||||
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Type | Hunting | |||||||||||||||
Place of origin | USSR | |||||||||||||||
Production history | ||||||||||||||||
Designed | 1961 | |||||||||||||||
Manufacturer | SAKO & Lapua | |||||||||||||||
Specifications | ||||||||||||||||
Parent case | 7.62×39mm | |||||||||||||||
Case type | Rimless, Bottle-Neck | |||||||||||||||
Bullet diameter | .223 in (5.7 mm)[1][2] | |||||||||||||||
Land diameter | .215 in (5.5 mm)[2] | |||||||||||||||
Neck diameter | .248 in (6.3 mm) | |||||||||||||||
Shoulder diameter | .402 in (10.2 mm) | |||||||||||||||
Base diameter | .447 in (11.4 mm) | |||||||||||||||
Rim diameter | .447 in (11.4 mm) | |||||||||||||||
Rim thickness | .059 in (1.5 mm) | |||||||||||||||
Case length | 1.524 in (38.7 mm) | |||||||||||||||
Overall length | 1.917 in (48.7 mm) | |||||||||||||||
Case capacity | 30.1 gr H2O (1.95 cm3) | |||||||||||||||
Primer type | Small rifle | |||||||||||||||
Maximum pressure | 51,000 psi (350 MPa) | |||||||||||||||
Ballistic performance | ||||||||||||||||
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Source(s): [1] |
Soviet 5.6×39mm cartridges were loaded with smokeless powder VT (винтовочный пироксилиновый порох ВТ), as well as Soviet 7.62×54mmR and 9×53mmR hunting cartridges.[7] It is the parent case for the .22 PPC, 6mm PPC, and the 6.5mm Grendel cartridges.[6]