Regarding front sight height I have used the algebra method but it does not take into consideration barrel dwell time or recoil impulse. The best method is to shoot your intended load with the rear sight in the mid position. XS used to include a plastic front sight that fit into the dovetail. Cut the plastic post with side cutters until you determine the proper height for your load. I have also filed a roofing nail head to fit in the dovetail when the XS trial sight was not available.
