The Austro-Hungarian 8×50mmR Mannlicher or 8×50mmR M93 is a service cartridge dating back to the days of semi-smokeless powder.

[1][2] In approximately 1890, the Austro-Hungarian Empire converted the older, black powder filled 8×52mmR Mannlicher round into a semi-smokeless cartridge, following upon the heels of France's 8 mm Lebel cartridge, the first smokeless military round.

Upon perfection of a completely smokeless powder by the Austro-Hungarians in 1893, the loading was again updated and thus re-designated as the "8mm M.1893 scharfe Patrone".

[3][4][5] British gunmakers BSA produced sporting versions of the Lee–Enfield military rifle, chambered in "8mm (.315")" from well before World War I until at least the 1930s.

Standard .323" 8mm S-bullets are correct for this caliber though best results are obtained from open-base bullets that can expand to fit the .329" bore.