The
8×51mmR French (8mm Lebel) rifle
cartridge was the first
smokeless gunpowder cartridge to be made and adopted by any country. It was introduced by
France in 1886. Formed by
necking down the 11mm Gras black powder cartridge, the smokeless 8 mm Lebel cartridge started a revolution in military rifle ammunition. Standard 8mm Lebel military ammunition was also the first rifle ammunition to feature a
spitzer boat tail bullet (Balle D), which was adopted in 1898. The long-range ballistic performance of the 8mm Lebel bullet itself was exceptional. For use in the magazine tube-fed early
Lebel rifle, the 8mm case was designed to protect against accidental percussion inside the tube magazine by a circular groove around the primer cup which caught the tip of the following pointed bullet. However, the shape of its rimmed bottle-necked case, having been designed for the Lebel rifle's tube magazine, also precluded truly efficient vertical stacking inside a vertical magazine. Although it was once revolutionary, the 8mm Lebel was declared obsolete after World War I and was soon after replaced with the
7.5×54mm French round.