The 8mm Lebel rifle cartridge was the first smokeless powder 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.
I thought the case was a bit interesting with that bell shape. I wonder how it goes burning powder, but be a hell of a pressure spike as it concentrates under the shoulder there.
Just thought it was interesting