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13.2×99 Hotchkiss

The 13.2mm Hotchkiss cartridge was developed in France during late 1920s especially for the new heavy machine guns. It was adopted by French army in 1930 along with the Hotchkliss heavy machine gun, and before WW2 it also gained popularity throughout several European countries and in Japan, mostly for AA or aircraft applications. After WW2 its popularity rapidly declined in favour of the American 12.7×99 / .50 BMG round, to which Hothckiss round has more than passing similarity. Today 13.2mm ammunition is completely obsolete. No guns and ammunition in this caliber were made for many years.

 

Designation Bullet weight, g Muzzle velocity, m/s Muzzle energy, J Comments
52 800 16 640