-600
-400
-200
-0
I think it would be more like this ... if your convergence was set as say 400 ...
-400 (center pipper)
-600
-800
or
-0 (remembering that your convergence is 400)
-200
-400
As distance is increased from your convergence setting, you have to pull your nose UP to compensate for bullet drop. Bullet drop distances then would have to take into consideration the gun package you are using ... too much trouble to make all those sights for the many varying guns packages available on the planes.
I fly with the Dot 'O Death gunsight ... adding more stuff to the HUD only clogs up my view ... I'd rather guesstimate.