I have similar issues when firing in my 109 at Spits (online). I do score hits with nice optical explosions that go away as quickly. But never ever have I managed to flame a spit or rip off a wing. I however got flamed badly twice consecutively by a red pilot. That is annoying. I always thought it was firepower the principal advantage of the blue planes; even if the 109 is not a 190 I would expect a little advantage. And I still don't feel any advantage with the M-Geschoss.