[{HVY-E}Jinxx]

less fuel makes your plane more agile because its less heavy, nothing to do with ammo.

Now that is a revelation. I've been flying about a year and half and have read about everything I could, but this never seems to have been mentioned anywhere. I thought that less fuel simply allowed for a heavier bomb/ammo load and only affected the flying time. And since most missions I fly are of the short and furious off-line dogfights that end with me getting shot down anyway, having a more agile plane can be a plus point.

This is a very useful tidbit of basic info for which I am very grateful.

This is true only for the game. In real life, fuel was reduced to allow for more ammo/bombs.

ie.
B17's would at times take as much fuel as they could carry and reduce the amount of bombs so they could get off the ground and still make it to targets deep within Germany.