 Together with light weight, good mobility and sufficient anti-armor performance with a HEAT shell (enough to penetrate T-34 in most situations; the side armor of the KV could also be pierced), it made the gun a decent anti-tank weapon.It had shortcomings, particularly its low muzzle velocity.Although this did not affect the armor-piercing characteristics of its HEAT ammunition, it meant insufficient performance when firing regular AP shells and - because of difficulties in hitting small mobile targets - its low effective range of about 500 m even with HEAT.