King Tiger Penetration Trials

"ACT

Results of investigation of the T-6-B (King Tiger) tank to discover weak spots and penetration, carried out on September 2nd, 1944, near the city of Staszow (Poland) by a commission composed of:

1. Chair: 
1. Commander of Artillery of the 5th Guards Army, Guards Major General of Artillery V.I. Poluekov
2. Members:
1. Commander of the 31st Guards Rifle Corps, Hero of the Soviet Union, Guards Lieutenant General Rodimtsev
2. Commander of the 155th Novorossiysk Army Cannon Artillery Brigade, Colonel M.A. Tarasov
3. Commander of the 10th Tank Destroyer Brigade, Lieutenant Colonel Bazirenko
4. Commander of the 31st Tank Corps, Guards Colonel Pleshanov

The results are composed into the following table:

Part of the hull	Gun caliber	Type of ammunition	Range	Angle	Result
Hull and turret platform front	152	HEAT*	250	80	Penetration of the machine gun ball, 350 mm in diameter.
				46	70 mm deep dent 230 mm in diameter.
	122	HEAT	300		65 mm deep dent
	85	AP	200	46	50 mm deep dent 170 mm in diameter
Turret front	57	APCR	200	75	165 mm deep dent, 70 mm in diameter
Turret side	152	HEAT*	1200	70	Penetration, entrance diameter is 200 mm
			250	86	Penetration of armour and opposite side. Entrance diameter: 190 mm. Exit diameter: 840 mm
	85	AP	200	86	Penetration, entrance diameter is 170 mm
Hull side	152	HEAT*	465	85	Penetration of armour and opposite side. Entrance diameter: 170 mm. Exit diameter: 750 mm
	85	AP	400	88	Penetration, entrance diameter is 150 mm
	76	APCR	400	88	Penetration, entrance diameter is 40 mm
		AP	300	88	75 mm deep dent with a diameter of 84 mm
	57	APCR	400	88	Penetration, entrance diameter is 70 mm
		AP	400	88	Penetration, entrance diameter is 60 mm
	45	APCR	150	80	Penetration, entrance diameter is 30 mm

Conclusions

1. The front armour cannot be penetrated by 45, 57, 76, 85, 152 mm AP or APCR ammunition.
2. The side of the tank (side of the superstructure and side of the hull) can be penetrated by:
1. APCR:
1. 45 mm from 150 meters.
2. 76 mm from 300-400 meters.
2. AP:
1. 45 mm at 150 meters does not achieve penetration.
2. 76 mm at 200-300 meters does not achieve penetration.
3. 85 mm penetrates at 400-600 meters. 
4. 152 mm penetrates at 1200-1500 meters.
3. The turret side of the tank can be penetrated by:
1. APCR:
1. 45 mm from 150 meters.
2. 76 mm from 300-400 meters.
2. AP:
1. 76 mm at 200 meters does not achieve penetration.
2. 85 mm penetrates at 400-800 meters. 
3. 152 mm penetrates at 1200-1500 meters.
4. The running gear is the most vulnerable part of the tank for all calibers of artillery.

[signatures]"

Via ivagkin

* 152 mm HEAT was not available at this time, this is likely 152 mm sharp tipped AP.