This is what usually happens in an attack from a P-47/Fw-190/P-51

[MaxGunz]

If you're that close and not going to ram,

1) your shots are coming from well below your sight, probably need to shoot a bit high
2) you can rudder back and forth to rake your fire across his fuselage all the while shooting around the IL-2 bullet soaking tail
3) you probably shouldn't be so close or co-E and may get reversed on

At speeds below 300 kph, if the other has a better sustained climb than you do then just hope that he doesn't think of it.