Mid beads, if found, are usually on better grade guns. Being so, I have one gun with a mid bead and if I remember correctly, the manual said they were to be aligned in a figure eight. I use the gun for trap shooting and turkey hunting and with the stock modified to fit me, the beads do align in an 8. I have a personal policy of never putting a shotgun to my shoulder without first having a "target" to focus on so as not to allow my focus to go to the rib and bead. I do this to avoid diminishing target focus. I know that sounds a bit mental but not focusing on the target is, I think, one of the main problems shooters have. Many want to aim a shotgun as they would a rifle and that is the root of shooting behind the bird. My gun with a mid bead did not fit me and I had to adjust the comb to fix that. Is it just a coincidence the beads align in the 8? Maybe the gun was built correctly and I am built wrong!
