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The Type 11 was initially meant to fire standard Type 38 rifle ball ammunition by means of ordinary five-shot Type 38 stripper clips. The Type 38 spitzer version of the 6.5×50mm cartridge remained unchanged until after the adoption of the Type 11 light machine gun in 1922. For this reason it was later replaced by the more powerful 7.7×58mm cartridge.
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The round was criticized for being underpowered compared to other, more powerful American and European cartridges such as The Type 38 spitzer-bullet round fired a 9.0-gram (139 gr) bullet with a powder charge of 2.5 grams (39 gr) for a muzzle velocity of around 770 metres per second (2,500 ft/s). This was later changed with the adoption of the Type 38 when Japan, in line with the other great powers around the same time, changed to the pointed or spitzer bullet in the first decade of the twentieth century. Type 44 cavalry carbines, first adopted in 1911, were also chambered in 6.5×50mm.Įarly 6.5×50mm cartridges had a cupronickel, round-nosed bullet weighing 10.4 grams (160 gr) fired with approximately 2.0 grams (31 gr) of smokeless powder. In 1905, the round also came to be offered in the Type 38 Arisaka infantry rifle and carbine, both of which rendered the Type 30 obsolete in Imperial Army service. In 1902 the Imperial Japanese Navy chambered its Type 35 rifle for the cartridge as well. The new rifle and cartridge replaced the 8×52mm Murata round used in the Type 22 Murata Rifle. The 6.5×50mm Semi-Rimmed (6.5×50SR) Japanese cartridge, currently manufactured under the designation 6.5mm Jap, was adopted by the Imperial Japanese Army in 1897, along with the Type 30 Arisaka infantry rifle and carbine. Russo-Japanese War, World War I, Second Sino-Japanese War, World War II, Indonesian War of Independence, Korean War Japan, Russia, United Kingdom, China, North Korea, South Korea, Thailand, Finland, Indonesia, Cambodia, Poland