NAME – 9x22mmR

NAME (COMMON) – 9mm Japanese Revolver, 9mm Type 26, Year 26 Type Revolver cartridge

TYPE – Rimmed centerfire

YEAR OF INTRODUCTION – 1893

COUNTRY OF ORIGIN – Japan

CASE TYPE – Rimmed tapered

CARTRIDGE LENGTH – 29.99 mm (1.181 in)

CASING LENGTH – 21.89 mm (0.862 in)

CASE HEAD DIAMETER – 9.83 mm (0.387 in)

CASE RIM DIAMETER – 11.05 mm (0.435 in)

BULLET TYPE – Round nosed lead

BULLET DIAMETER – 9.04mm (0.356 in)

BULLET WEIGHT – 9.72 g (150 grains)

POWDER WEIGHT – 0.16 g (2.4 grains) Smokeless

CASING WEIGHT – 4.38 g (67.6 grains)

TOTAL ROUND WEIGHT – 14.26 g (220 grains)

MUZZLE VELOCITY – 195 m/s (640 fps)

NOMINAL BARREL LENGTH – 11.9 cm (4.7 in)

MUZZLE ENERGY – 185 j (136 ft/lb)

     This cartridge was adopted by the Japanese in 1893 for their Type 26 revolver. No other weapon has been found that was chambered for this round. It has a very thin rim. It has ballistics close, but inferior to, the 9x20mmR (.38 Smith & Wesson) round when it was loaded with black powder. The round is virtually unknown outside of Japan in general and even there it was declared obsolescent in 1904 with the adoption of the 8x21mm Nambu round. In spite of its poor performance, the round and the Type 26 revolver chambered for it, was still found in Japanese service to the end of World War II.