Sight radius in decimals times elevation error divided by distance to target in inches = the amount of change needed in sight height.
EXAMPLE
Sight radius 5 3/4" = 5.75
Elevation error 6 or 8" low so make it 7"
Distance to target 25' = 300"
(5.75*7)/300 = .134 sight change. Raise the back sight by half that and lower the front by the other half.
Oh, yeah, do the math with your sight radius and distance to target.
