La Hitte system
…on the 1847 invention of Captain Tamisier, were oval-shaped, and had small protrusions to follow the grooves of the bore. Previous guns, such as the Canon obusier de 12, were rifled to accommodate the system. The system included newly-rifled siege guns of 12 cm (4.7 in), 16 cm (6.3 in) and 24 cm (9.4 in) bore, new field…