RAPID-FIRING

(a.) In the United States navy, designating such a gun using fixed ammunition or metallic cartridge cases; -- distinguished from breech-loading (abbr. B. L.), applied to all guns loading with the charge in bags, and formerly from quick-fire. Rapid-fire guns in the navy also sometimes include automatic or semiautomatic rapid-fire guns; the former being automatic guns of not less than one inch caliber, firing a shell of not less than one pound weight, the explosion of each cartridge operating the mechanism for ejecting the empty shell, loading, and firing the next shot, the latter being guns that require one operation of the hand at each discharge, to load the gun.