7.7x58mmSR

NAME – 7.7x58mmSR

NAME (COMMON) – 7.7 Japanese Type 92

TYPE – Centerfire

YEAR OF INTRODUCTION – 1932

COUNTRY OF ORIGIN – Japan

CASE TYPE – Semi-rimmed bottleneck

CARTRIDGE LENGTH – 79.76 mm (3.14 in)

CASING LENGTH – 57.15 mm (2.25 in)

CASE HEAD DIAMETER – 11.99 mm (0.472 in)

CASE RIM DIAMETER – 12.7 mm [12.1 mm 1940]

BULLET TYPE – Spitzer-shaped full jacketed ball

BULLET DIAMETER – 7.87 mm (0.310 in)

BULLET WEIGHT – 13.15 g (203 grains)

POWDER WEIGHT – 2.86 g (44.18 grains)

CASING WEIGHT – 11.79 g (182 grains)

TOTAL ROUND WEIGHT – 27.80 g (429 grains)

MUZZLE VELOCITY – 720 m/s m/s (2362 fps)

NOMINAL BARREL LENGTH – 72.6 cm (28.6 in)

MUZZLE ENERGY – 3410 j (2515 ft/lb)