A few illustrations from
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Target I: 6mm skirting armour + 51cm air gap + 50mm armour:
Notice how the PIAT has made two neat little holes in the 6mm skirting plate while the British-made copy of the German 3kg magnetic charge have blasted a 15cm hole in the plate.
Here are the results on the 50mm armour. The two PIAT hits has pitted the armour, while the 3kg charge have penetrated the armour completely.
And this is the damage caused to the skirting plate by a hit from a 95mm rotated shell fired from 100 yards.
Here is something you dont see everyday - a British Centaur tank with "Schürzen":
In one test, 25-pdr HE was fired at the "Schürzen"-clad Centaur.
Before...
Note the holes in the armour and skirt from previous tests.
After.....
cbo