Muzzle velocity
Ammunition consisted of 320 armour-piercing, fragmentation incendiary and fragmentation rounds (all with tracers). 130 rounds were in 5-round clips and 190 rounds were loose without clips. Armour-piercing composite rounds could be used against enemy heavy tanks. Muzzle velocity was between 890 and 920 m/s depending on projectile type, the armour-piercing shell weighed 0.785 kg, fragmentation shells weighed 0.732 kg. The autocannon could be depressed and elevated manually between -5° and +85°. Cyclic rate of fire was 120 to 130 rounds per minute while the practical rate of fire was about 50 to 60 rounds per minute. Maximum combat vertical fire was 2,500 m while the maximum vertical range was 6,500 m.