Greeting's Winston,
The correct sight picture is; when looking down the sight line, the top of the front sight should
be in plain view and level with the top of the rear sight; with an equal amount of light showing
on either side of the front sight. This should be correct for a 25 yard target; however as the distance to the target increases, you may need
more elevation on the front sight. At least this is what works for me.
Best Wishes,
Ala Dan, N.R.A. Life Member