I used to make lots of kills on A20s and Il-2s in my Panzer. Though in most cases I'd put the round through the radiator on the Ils. I remember the time I put a Tiger round straight through the center of an Il-2's radiator and he wandered away with a leak...I remember thinking about how tha'd probably still cause immense if not fatal structural damage.
I wonder if I still have that film laying around from some guy who used the 50kg bombs in a set of Ju-88s to bomb down a set of lancstukas.