A missile from guns intermediate between case-shot and solid shot, having much of the destructive spread of the former with somewhat of the range and penetrative force of the latter. A round of grapeshot consists of three tiers of cast-iron balls arranged, generally three in a tier, between four parallel iron discs connected together by a central wrought-iron pin. For carronades, the grape, not being liable to such a violent dispersive shock, they are simply packed in canisters with wooden bottoms.