Penetration depended on the angle in which the grenade hit the target.
Under 45 there was no significant damage.
60° to 50° penetration of 50mm, 70° to 60° penetration of 60mm, between 90° to 70° the grenade penetrated up to 80mm.
Best results were at a range of 50meter. The grenade could be launched up to 75meter.