Description
This target practice cartridge is used in subcaliber 37mm guns fitted to larger weapons for practice firing and training.
The cartridge consists of a black powder filled steel projectile crimped to a steel cartridge case and fitted with a base-detonating practice fuze. A rotating band encircles the projectile near the base. The cartridge case is loosely filled with propellant and is fitted with a percussion primer.
Functioning
When the weapon is fired, the firing pin strikes the primer to ignite the propelling charge. The rotating band engages the barrel rifling to impart spin to the projectile and prevent escape of pressure past the projectile. Rapidly expanding gases from the burning propellant drive the projectile through the barrel with the velocity required to reach the target. On impact the base detonating fuze ignites the black powder filler in the projectile, simulating the detonation of a service projectile.
Hazardous Components
Filler is black powder (0.084 lb, 0.04 kg).
Cartridge case contains M2 propellant (0.56 lb, 0.25 kg)
Primer - M23A2 percussion
See Also
Primer, Percussion, M23, M23A1, M23A2
Source(s)
TM 43-0001-28, Artillery Ammunition (chg 11, 2003)
TM 9-1300-203, Artillery Ammunition (1967)
