Mrfishnhunt:
Lots of good suggestions here. However, depending on your expectations, a target should be the more than just the destination of our bullets. It is actually an essential part of the sight alignment/sight picture fundamental that allows you to shoot accurately. Contrast is number one, combined with visibility, then sized proportionally based on distance. Blackened sights are easiest to see in good light. A round black bullseye sized so as to appear the same thickness as your front sight at the distance you are shooting will nearly always allow you to get excellent sight picture. I teach the "6 O'clock" hold where the front sight just touches the bottom of the round black bullseye. This is the most exact and repeatable sight picture. If the bullseye is correctly sized, left/right alignment is assured. Having the front sight just touch the bottom of the black allows for precision in up and down alignment. If the black front sight wanders into the black bullseye you will end up with up and down elongated groups instead of round ones. Using the 6 O'clock hold you may need to trim the front sight height to get the bullets to land in the center of the target, but it will nearly always give the best groups on paper.