NAME – 5.7×15.6R

NAME (COMMON) – .22 Long Rifle High Velocity

TYPE – Rimfire

YEAR OF INTRODUCTION – 1887

COUNTRY OF ORIGIN – USA

CASE TYPE – Rimmed straight

CARTRIDGE LENGTH – 24.8 mm (0.975 in)

CASING LENGTH – 15.1 mm (0.595 in)

CASE HEAD DIAMETER – 5.7 mm (0.225 in)

CASE RIM DIAMETER – 7 mm (0.275 in)

BULLET TYPE – Round nosed lead

BULLET DIAMETER – 5.7 mm (0.223 in)

BULLET WEIGHT – 2.59 g (40 grains)

POWDER WEIGHT – 0.14 g (2.2 grains)

CASING WEIGHT – 1.64 g (9.8 grains)

TOTAL ROUND WEIGHT – 29 g (52 grains)

MUZZLE VELOCITY – 323 m/s (1060 fps)

NOMINAL BARREL LENGTH – 15.2 cm (6 in)

MUZZLE ENERGY – 135 j (100 ft/lb)

     The .22 Long Rifle is the most popular metallic cartridge in the world. Nearly every country makes a loading for it. The cartridge was loaded with black powder until the late 1890s when smokeless powder loads were developed for it. High Velocity (supersonic) loadings, of this round were developed by the Remington Arms Company in 1930