I was playing a match earlier and faced a T58 Heavy, my teammate in the FV4005 went up to shoot it, and somehow bounced a shell from the T58 in his turret. This should be impossible since the whole turret on FV4005 is 14mm thick and the T58 has a 155mm gun and should therefor overmatch the 14mm plating.
Adding video evidence here as well, one with the original speed, and two slowed down variants.