MIL-C-18757D, MILITARY SPECIFICATION: CARTRIDGE CASES, STEEL (OTHER THAN SMALL ARMS), GENERAL SPECIFICATION FOR (19 JUN 1991)

MIL-C-18757D, MILITARY SPECIFICATION: CARTRIDGE CASES, STEEL (OTHER THAN SMALL ARMS), GENERAL SPECIFICATION FOR (19 JUN 1991)., This specification covers the general requirements for 20 millimeter (mm) and larger (other than small arms) steel cartridge cases.