Abstract: An automatic loading device consisting of a magazine of rounds of ammunit, a tray and rammer assembly to receive a round from the magazine as the gun tube recoils from firing a previous round, means responsive to counter recoil movement of the gun tube for moving the tray into position for loading a round into the gun chamber, cable means for releasing a rammer mechanism to exert forward movement against the round to move it forward into the gun chamber and close the gun breech. A fluid drive means retracts the rammer to cocked position during recoil to enable it to operate (move the round forward) during counter recoil of the gun tube.