US Cartridge, 120mm TP-T, M831
This cartridge is a target practice round to simulate the ballistics of the M830 High Explosive Antitank Multipurpose with Tracer ammunition. The cartridge is fired from the 120-mm smooth bore M256 cannon.
The M831 cartridge external appearance is identical to that of the M830 HEAT-MP-T service round. Internally the round does not contain any explosives, shaped charge liner base fuze or nose cap. The round consists of a steel body with aluminum spike and plastic obturator, in addition to a fin and boom assembly with tracer. The complete round propellant system comprises a stub metal case with combustible sidewall and M123 primer. The propellant is a single perforated stick propellant both bagged and unbagged with additional segments fitted over each fin.
Collaborative Ordnance Data Repository