Note: Do not rely on this information. It is very old.
Grape Shot
Grape Shot, a mass of spherical bullets, packed together in an open frame of cylindrical shape, fitted for discharge from a gun, and so arranged as to break up soon after leaving the muzzle. In the old sea-service there were always nine balls in a grape-shot, which was then formed in a canvas bag strongly corded together and quilted with packthread. The weight of the balls varied from 4 lb. for a 42-pounder to 1 lb. for a 12-pounder, and 6 oz. for a 4-pounder.