It's been a struggle to match the height of the front sight to the adjustment range of the NECG rear sight.
Correcting Front Sight Height If your rifle or pistol is shooting high or low, there is a formula you can use to determine what the correct height for your sight should be.
Terms Amount of Error: The vertical distance from the bullseye to your shot on the target, measured in inches.
Sight Radius: Distance from the front sight to the rear sight, measured in inches.
Distance to Target: The distance from your shooting position to the target,
measured in inches .
[color:"red"]Note: Be sure that your rear sight is at its mid-point before you shoot. [/color]
Formula (Amount of Error X Sight Radius) divided by (Distance to Target) = Sight Correction Needed
If you are shooting low, you would replace your front sight with a lower sight, and conversely, if you were shooting high, then you would replace your front sight with a higher sight. Add or subtract the number of thousandths needed to the actual height of your sight and you will have the correct height of the replacement sight.
Example: At 100 yards (3600 inches), your shot is 6" low and the distance between your front and rear sight is 19.5".
(6" X 19.5") divided by (3600") = .0325"
Since you are shooting low, you would need to lower your front sight by .032".
*** For rifles, you measure the front sight height from the bottom of the dovetail to the top of the sight. For pistols you measure the height of the blade only. This is true unless stated otherwise in the sight specifications.