PURPOSE: To eliminate defects that, since a conventional ammunition cartridge case is made of a metal, a dead space useless for propulsion of a bullet is increased, and noxious gas generated during firing remains in the cartridge case.

CONSTITUTION: A cartridge member 3 is provided with a combustion cylinder 6 consisting of a bottom 7 having a central opening part 8 and a side opening 9. A hollow component 4 enters the said member 3 through a central opening part 8 without obstructing the side opening 9. The hollow component 4 has a central hole surrounded with an inner wall throughout an overall height, and an anchoring means 18 to fasten a separate element is provided. A semi combustible ammunition 1 comprises the cartridge case member 3.