Charnko-Komaritskiy 57 mm Anti-tank Gun

"To the deputy chief of the GAU KA and the chair of the Artkom, Major-General of Artillery, comrade Hohlov

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.

1. Caliber: 57 mm
2. Shell mass: 3.14 kg
3. Muzzle velocity: 950 m/s
4. Bore axis height: 550 mm
5. Horizontal range: 360 degrees
6. Vertical range: from +20 to -5 degrees
7. Mass: 550 kg
8. Rate of fire: 20 RPM
9. Breech: sliding, semi-automatic
10. Mount: sprung, maximum movement speed 70 kph

The project is scheduled for completion on August 1st of this year. I ask you to notify the Technical Council of the NKV of Artkom's data on the 57 mm Charnko-Komaritskiy AT gun.

Deputy Chair of the NKV Technical Council, Gostev
July 8th, 1942"

CAMD RF 81-12038-53

The 360 degree mount made the gun perfect for use in a turreted tank destroyer.