Sorry. But I don't agree with any of you. How much rib you are going to see and what your sight picture looks like depends on what you are shooting at and the type of gun you have. If you are hunting your two beads should line up one behind the other and you shouldn't see any rib. If you are holding a hunting gun with your beads stacked, that means that you have probably slid the heal of the gun too far down on your shoulder to the point where the toe is no longer in the pocket of your shoulder. And if you have your beads stacked, as Joe says on a hunting gun, when you shoot at a falling bird, such as one going down over a hill, you will probably shoot over the bird. So for hunting, I would say that you want the beads to align one behind the other so that you can shoot at rising OR falling targets. And you should not see any rib.
