12.7x108mm Soviet

Friday, December 7th, 2018

12.7x108mm Soviet

After the conclusion of World War I, the major powers saw the effectiveness of the German 13x92SRmm anti-tank cartridge and the .50 caliber (12.7x99mm) Browning Machine Gun (BMG). The original intention of these calibers were that of anti-tank, anti-aircraft and heavy machine gun. The German 13x92SRmm saw limited use during WWI and further development of this caliber ended with the war. However, the .50 BMG was standardized by the U.S. Army in 1923 and the race was on for a heavy caliber machine gun caliber.

The major power began developing their own heavy caliber machine guns and in 1930 the Soviet Union introduced the 12.7x108mm caliber. The British soon followed with the .5 in. Vickers cartridge and the Italian Army developed the 12.7x81SRmm Breda. The Breda was adopted by the Spanish, Japanese and Hungarian armies. The French developed the 13.2x99mm Hotchkiss which the Chinese, Italians, Japanese and Polish armies adopted too.

These caliber were in service throughout WW II and the first to be phase out were the .5 in. Vickers and the 12.7x81SRmm Breda. The 13.2x99mm Hotchkiss and the Breda were in service until the 1960s after which they were replace by the 12.7x99mm (.50 caliber) BMG in NATO service. The 12.7x108mm remains in front one military service with the Russian Army.

Although both the .50 BMG (12.7x99mm) and the 12.7x108mm cartridges were developed for the same purpose and have similar ballistic performance, they are not interchangeable with each other. Today, there is one ammunition factory in Russia that makes this ammunition. RCC Brass, in the U.S., manufactures the cartridges.

The 12.7x108mm Soviet is capable of propelling a .512” dia. 745 grain bullet at 2,645 fps with 11,394 ft.-lbs. of energy

Roberson Cartridge Company is a custom manufacture of Vintage, Obsolete, Hard to Find and Wildcat calibers.

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