La Hitte system

Left image: The La Hitte system was based on a shell equipped with lugs which allowed it to follow the rifle grooves inside the cannon bore.
Right image: Shell used in Japan during the Boshin war.

The La Hitte system (French: système La Hitte), named after the French general Ducos, Count de La Hitte,[1] was an artillery system designed in March 1858 to implement rifled muzzle-loading guns in the French Army.

  1. ^ Rifled Field Pieces: A Short Compilation of what is Known of the New Field - Page 32 by Franck Taylor 1862 [1]