Seems to me like you are talking about different things here. First off, you would have to look at your bead alignment while shouldering your gun to determine where your POI would be. Then off to the pattern board to determine the actual POI. Now then, you would need to adjust your gun fit by raising or lowering the comb or front head. Once the proper gun fit is determined and POI is set, then when you are shooting you would not need to worry about the bead position. If the gun fits and shoots where you point it, then the target should break. I need a flat shooting gun and set mine up that way. Once set, then I really don’t care about the beads, I just point and shoot. Those fast crossers don’t give me time to look at the beads and the target. Obviously you’re not supposed to bead check anyway. Anyhow, your original post asks two questions that to me are not directly related.I recently started a thread in the Gunsmithing section about how to lower an adjustable comb to make my poi lower. Surprisingly a few folks suggested raising the front bead. I say "surprisingly" because, for me, if I am looking at the bead I'm not focusing on clay. So, just curious, how many shooters actually take the bead into account when actually shooting... aiming vs. pointing the gun? I rely on eye-hand coordination learned with a specific gun over an extended period of shooting, and hard focus on the clay. In sporting clays, in my periphery I am aware of the barrel's relative presence, but focus on the bead? Not me. How about you?
I believe the term your looking for is called---peripheral vision!!!Maybe you're not looking at the bead, but I believe you see it in your subconscious.