Abstract: An explosive projectile comprises a casing, having a neck shaped portion adjacent to the opening, a female screw thread being formed in the internal wall of the neck shaped portion, and a region of increased average internal diameter in its inner wall beyond the screw thread, a charge of high explosive material partially filling the space inside the casing, and a case located between the charge and the neck shaped portion the case defining a detonation device cavity, the case being made of a malleable material and being swaged into the neck shaped portion and into part of the region of the internal wall of the casing which has an increased average internal diameter.

Abstract: An explosive projectile comprises a projectile casing, a high explosive charge filling a portion of the space inside the casing, an impervious case defining a detonation device cavity adjacent to a surface of the explosive charge, and located adjacent to the said surface of the explosive charge between the inside wall of the projectile casing and the impervious case, a pre-formed solid elastic sealant ring such that the seal effected by the sealant ring between the projectile casing and the impervious case is tightened if the pressure on the sealant ring from the material of the explosive charge increases.