The other day, I was defending an airfield from impending doom, when a Panzer showed up and started hitting vehicles that were surrounding the vehicle hangar.
He didn't see me pull my M16 up behind him, so I pulled up nice and close, got to the guns, aimed precisely at the low backside, and held the trigger. Half of my rounds hit him before he started to move, and I emptied the rest of the rounds as close to the backside as I could as he drove in a semi-circle. I think all I did was damage him a little.
I didn't have any expectations on killing him with the 50s though...should you be able to?
SOB