So a friend let me shoot his CSM 21, I think hoping I would buy it. At first look it seemed perfect for what I wanted a heavy 20 ga target gun. 30" barrels, well balanced, good stock dimensions for me. It seemed like I was looking right down the rib. Should be perfect. I tried it and couldn't hit with it, 10 out of 30 targets. I patterned it as best I could without a plate, just put up a piece of cardboard against a tree. It seems more than 50% of pattern is below point of aim. I have a laser tool for testing poi and tried it when home and it seems if I mount the gun but leave my head more erect the pattern is about 60/40. I have wanted a 30" barreled 20 ga over 7 lbs for clays but not sure I want to try and adapt my shooting style. I am open to advice. The gun is a fancy Grade 5, but that doesn't hit clays.