[saxman]

Hugh; I'm not talking about physically raising the front sight by installing a higher one - I'm saying if you hold the gun so you can see enough of the front sight to line up on the target, the gun will shoot high. The rear sight in this theoretical circumstance would be on target center but the top of the front sight would be above the center of the target. You shoot high. In order to properly sight the gun you have to line up the top of the front sight with the invisible line across the top of the rear sight notch. Since the notch is so small, this takes a moment, and the natural tendency is too put a little more of the sight up in the target, particularly if you're in a hurry. At least, that's my theory.