 Whereas numerous formats and designs had been in place in the French army, de Vallière standardized the French sizes in artillery pieces, by only allowing the production of 24, 12, 8 and 4 pound guns, mortars of 12 and 8 French inches, and stone-throwing mortars of 15 French inches.The 24-pdr was the largest caliber available to French artillery in this system.The cannon used core drilling of the bore of cannons founded in one piece of bronze, a method developed by Jean Maritz, which allowed for much higher precision of the bore shape and surface, and therefore higher shooting efficiency.