There were actually 40mm Beehive rounds manufactured on a limited basis for US Special Ops troops in Vietnam. Some troops felt that they were better than tactical buckshot, but many had more negative opinions -- inadequate spread, poor penetration against the type of huts often encountered in South Vietnamese villages, and the loud
whoosh the round produced when the round was fired. Though they quickly passed out of official military service, some are supposedly still in the supply train -- no doubt in a box in a warehouse next to the Arc of the Covenant...
