7.62x39mm

7.62x39mm

Case Type: Rimless, bottleneck
Bullet diameter: 7.9mm (0.312 in)
Neck diameter: 8.60mm (0.339 in)
Shoulder diameter: 10.07mm (0.397 in)
Base diameter: 11.35mm(0.447 in)
Rim diameter: 11.35mm (0.447 in)
Rim thickness: 1.50mm (0.059 in)
Case length: 38.70mm (1.524 in)
Overall length: 56.00mm (2.205 in)
Case capacity: 2.31cm3 (35.6gr H20)
Rifling twist: 240mm (1 in 9.45 in)
Primer type: Boxers Large Rifle (Brass)

Berdan (Steel case)
Maximum pressure(C.I.P.): 355.0 MPa (51.490 psi)
Maximum pressure(SAAM): 310..3 MPa (45.010 psi)
Filling SSNF: 50 powder
Filling weight: 1.605 - 1.63 gm