That many 88 rounds to eventually kill the sherman is showing something is FUBAR. Gun mantlet argument aside, what happened in that video shouldn't have happened. It can be seen that 88 rounds were hitting in different spots on the frontal armor. I agree with goreblimey, just one or two penetrating rounds from an 88 was typically more than enough to knock out the majority of Allied and Soviet tanks. The velocity of the shell passing through the tank would more often than not liquify the crew inside and or kill them out right from the internal organ damage caused by the shock wave as I have read in many different books over the years.