On the issue of: 57 mm Charnko-Komaritskiy AT gun
According to the orders of the Technical Department of the NKV and the wishes of the GAU KA chief, Colonel-General Yakovlev and the MK and MGK VKP(b) secretary comrade Sherbakov stated when demonstrating the 37 mm AT gun at OKB-46, the latter designed a 57 mm anti-tank gun based on the Charnko-Komaritskiy principle with the following characteristics.
- Caliber: 57 mm
- Shell mass: 3.14 kg
- Muzzle velocity: 950 m/s
- Bore axis height: 550 mm
- Horizontal range: 360 degrees
- Vertical range: from +20 to -5 degrees
- Mass: 550 kg
- Rate of fire: 20 RPM
- Breech: sliding, semi-automatic
- Mount: sprung, maximum movement speed 70 kph
July 8th, 1942"
The 360 degree mount made the gun perfect for use in a turreted tank destroyer.