hailshot การใช้

The projectile had been known since at least the 16th century and was known by various nicknames in the 17th century such as hailshot or partridge shot.
The surviving gunshields are almost all from the " Mary Rose ", and the four small cast iron hailshot pieces are the only known examples of this type of weapon.
Determining the direction and spread of case shot ( or hailshot ), which was fired from artillery, proved pivotal in establishing the battlefield's orientation and the starting positions of the Parliamentarian lines.
The two most common are the " bases ", breech-loading swivel guns, most likely placed in the castles, and " hailshot pieces ", small muzzle-loaders with rectangular bores and fin-like protrusions that were used to support the guns against the railing and allow the ship structure to take the force of the recoil.