Jean-Baptiste Verchère de Reffye took a key role in introducing rifled breech loading cannons, a marked improvement over the previous La Hitte system which had been in place since 1858. The La Hitte system used rifled weapons, but they were muzzle-loading, which had the advantage of structural strength, but the disadvantage of slowness in loading. In 1870, de Reffye developed the Reffye 85mm cannon, an 85 mm (3.35-inch) rifled breech-loading cannon, equipped with a breech screw, initially made of bronze. The cannon used shell cartridges for ammunition.