"Maybe the rats could....."
nah, that's WW2OL mate, this is Aces High.....and therefore you mean HTC. yeah ok, pedantic of me.
ok, firstly the range you're seeing displayed is in yards, not feet. So take whatever's displayed and times by 3.....
Secondly, you're zoomed in too far if the tracers screw your vision.
Try moving your head position further back in the cockpit, set the head position with F10. Then you can zoom some in forward view and still have view of your instruments and a slightly wider field of view in front of the cockpit. Dont zoom in all the way for the hell of it....just enough to make aiming easier. Also, you'll want to map the zoom key to a joystick button so's you can switch between views mid fight.