Initially I was surprised to learn that such a thing as an anti-tank rifle even exists. It seems a ludicrous idea to try to shoot a tank with a rifle. But let's suppose that the bullet really hits a lucky velocity/angle combination and penetrates the armor of the tank. What next? Was the point of anti-tank rifles to wound or kill the crew? Hit the ammunition magazine? If the shot failed to do any of these objectives, could it cause any damage to the tank? If you imagine a tank it is a huge armored box. The chance of hitting a vital point seems incredibly small. Are there some statistics saying e.g. if a tank was hit by anti-tank rifle, What are the odds of putting it out of action?