I have no where near the experience of Wayne but I had a light bulb moment when shooting with SLG. I thought I was "good" when shooting eight inch circles because the hits were in and the time looked "fast". Man was I in for a rude awakening when accuracy was put first and those circles shrunk.. Biggest target I use now is a six inch circle, most of the time I use a 2 inch dots or 1 inch squares..