You divide how far she's off POA in inches trough the target distance,also in inches and multiply that with your sight radius (distance from front to rear sight)in inches...in my case 14"/540" x 6" = 0.155554"
Good info to know, thanks!
FORS is the key for sight adjustment - Front-> Opposite, Rear -> Same. So shooting low you need either a higher front, or a lower rear. Seems you were suggesting lowering the front which would be the wrong way to go.
I think FORS is only for side to side adjustments. If you raise the front sight you lower the front of the barrel when your sights are aligned and shoot lower.
Edit: Warfarin beat me to it...


















































