A heavily armoured vehicle such as a tank, even a WWII era one, is unlikely to be significantly damaged by their own shot even at that range. There's sure to be shrapnel flying about and some of the external stores may be blown off by the blast, but all in all, if the hatches are closed (I'm guessing the TC's body as still in the hatch in Pauls example?) the paintwork should be barely scratched.
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If it moves, shoot it, if not push it, if it still doesn't move, use explosives.
Nothing happens in isolation - it's called "the butterfly effect"
Mors ante pudorem
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