Here is a film on the rather pathetic hitting power of the 37 mm M4 againt bombers:
37 mm vs. Lanc1. hit: right wing root. no further damage. Sorry, but at least the flaps in that area should have been toast on the first hit.
2. hit: left h-stab. it just looses the attached rudder. Seriously, a 37 mm blast should have removed the entire h-stab, and possibly the left elevator too.
3. hit: right wing root. roughly the same location as hit one. Now the flap is gone, but I think with that hit, the wing should have come off completely.
4. hit: left inner engine. enigne (or fuel tank) catches fire. I'm ok with that.
5. hit: left wing middle. no further effect. not even flap damage, quite similar to hit 1.
6. hit: left inner engine: second direct hit. this engine shoube be frikin' dead now, but still runs like a champ. at least the flap comes off though.
Now, at last, the right wing comes off, most likely due to fire damage.
So let me summarize:
6 hits from probably the strongest or 2nd strongest a2a round in the game. 2 times 2 hits placed in the same area, with only minor damage (flaps)
Direct hits in weak components, like h-stab and engine, with little to no effect.
Very underwhelming for a round that takes out an entire P-47 wing without breaking sweat, or completly blows a fighter apart. The only somewhat resonable effect was the round that lit up the plane, can't tell if it was the engine or fuel tank though.
In my opinion, the results should have been more like this:
1. hit: right wing root. flaps come off on first hit, not the second.
2. hit: left h-stab. the entire h-stab removed and possibly the left elevator too.
3. hit: right wing root. roughly the same location as hit one. Wing failure, game over.