14.5 mm 7-Z-6 cartridge with modernized instantaneous incendiary bullet The 14.5mm 7-Z-6 cartridge with modernized MDZ-M instantaneous incendiary bullet is used to destroy ground and air targets at altitudes up to 1,500 meters and at ranges up to 2,000 meters, ground soft-skinned vehicles at ranges up to 1,500 m with igniting heavy liquid fuels.