MIL-C-46936B, MILITARY SPECIFICATION: CARTRIDGE, 5.56MM, TEST, HIGH PRESSURE, M197 (05-MAR-1971)

MIL-C-46936B, MILITARY SPECIFICATION: CARTRIDGE, 5.56MM, TEST, HIGH PRESSURE, M197 (05-MAR-1971)., This specification covers a cartridge for proof testing 5.56mm Weapons.