Craig Boddington was the senior contributing editor of our modern gun and ammunition caliber dictionary. Craig was involved in the development and testing of many of these and writes from first hand experience. This dictionary was written exclusively for Wholesale Hunter with unique information found nowhere else.
GUN CALIBER DICTIONARY
Rifle Ammo
7.7X58mm Japanese
The 7.7X58mm Japanese (7.7X58mm Japanese Arisaka) was introduced in 1939 as a replacement for the long-outdated 6.5X50mm cartridge and rifle. There were actually two versions, rimless for rifle and semi-rimmed for machine guns, which must have been a major logistics nightmare! Both used a .311-inch bullet diameter, with a 181-grain bullet for rifles in the rimless version and a 201-grain bullet in the semi-rimmed version. Velocities were a slow 2370 fps for the former; and a much more credible 2380 fps for the heavier bullet. Fielding of the 7.7X58mm was never completed before war's end, so the 7.7X58mm is less common than its 6.5X50mm predecessor. Factory ammunition remains available. — Craig Boddington
