"When the Russian tanks attacked on 9.4.1942 and 11.4.1942, they mainly tried to break through to the main battlefield on the south shore of the lake, south of Koia-Assan. The tanks, at first, could not be spotted from the observation point, as they approached through a valley. The tanks were spotted when they were to the left of our positions, occasionally already behind us, or returning to their positions. Tanks were not shot at the front, but at the sides, and usually the rear.
The following types of tanks were destroyed:
- 09.4.1942: 9 T-26, 2 BT-7
- 11.4.1942: 4 T-60
The tanks were shot at the following approximate distances, and took the following amounts of rounds:
- 1 T-26 at 40 meters, 3 shots.
- 3 T-26 at 100 meters, 3 shots each.
- 2 T-26 at 150 meters, first in 1 shot, second with 5 shots.
- 1 BT-7 at 400 meters, approximately with 9 shots.
- 2 T-60 at 550 meters, approximately 6 shots each.
- 3 T-26 at 600 meters, approximately 10 shots each.
- 1 BT-7 at 600 meters, approximately 10 shots.
Aside from three tanks, all caught fire. On April 9th, close to the evening, a reinforced 44 ton KV tank came. We shot at it fruitlessly during the day, and, on its way back, 12 times at a range of 50 meters. The KV had a trail of smoke coming out of the rear, but kept going towards its positions and disappeared. On May 11th, a burning T-60 approached from the rear. We fired at it twice, and the crew bailed. "
CAMD RF 38-11355-651
The effectiveness seems similar to the Soviet infantry AT weapons previously explored: good against light vehicles from the sides and rear at a few hundred meters, and not against much else. Of course, in German tradition, the gun is much more complicated and expensive. Unlike the Soviet PTRD and PTRS, which were pretty ordinary large caliber rifles, the sPzB 41 was a squeeze-bore weapon, closer to a light AT gun than a rifle. At a much greater cost and much higher mass, the weapon is as effective as its Soviet equivalent.