I started this at a "somewhat advanced age", and I want to actually get good at it. With my launcher in a field, I'm good for maybe 2/3 when I'm on. The gun seems to fit, they're dust when I do hit, but I'm missing too often. My barrel has a mid-bead. How should the 2 beads be oriented? I know I haven't formed a concise question, but any pointers? Thanks.