Guys, don't overdo the JSU-152 abilities. The AP round was basically a large chunk of not very high grade of steel and low velocity, so it's armour piercing abilities were rather limited. Remember this was an assault gun, not an AT system, there were other systems more suited, like the JSU-122 (tactically the SU-152 and SU-122 were interchangeable), the SU-85 and the mighty SU-100.

The idea behind the 152mm slug was that it might not penetratre, but the wallop would be strong enough to at least wrench something out of it's socket and buckle anything that it hit. And the crew inside would be completely out of their senses, we are talking of a 50kg steel chunk fired at 600 m/s which at closer range would simply wrench a turret off

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