You will just have to experiment. I hate having a bunch of pins on my sight. It is way too easy to pick the wrong one at crunch time. I have done it. Practice at odd yardages by putting the target centered between two pins. So if you have a 20 and a 30 shoot at 25 by splitting the difference. I would rather do that than add another pin. The other problem with a bunch of pins is the obstruct the view of the target. Brian