Bergmann-Simplex 8mm cartridge

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The 8mm Bergman-Simplex cartridge, also known as 8mm Bergmann Nº 6 and 8x18mm Simplex,^[1] is a cartridge developed by Theodor Bergmann for his Simplex pistols. Original loadings of this cartridge fired a 71 grain bullet at 790 feet per second.^[2]