I am no expert on it as to its need and application but what I have been told and experienced a bead on that part of a gun can't be used in active shooting at anything in way of a moving target. I guess there are times when you need to use those two points to quickly check gun mount's point of reference when practice mounting gun to make sure gun is aligned and pointing to what your looking at and maybe a point of impact. Sort of like a quick reference bore site. Have seen plenty of mid barrel beads but never one so far back on a shotgun. I guess the further the distance between the two beads gives a more refined or tighter reference point.
Here is a cliche` article I saw on it that confirms probably what we have all been told about shotgun shooting ad nausea-em. But it is on the interweb so it must be confirmed gospel. BTW the whole fiugure 8 description made my head spin for a few moments trying to wrap my mind around what he was saying
https://www.wideopenspaces.com/reall...-bead-shotgun/
Tom Knapp was supposedly a big endorser of optic front bead sight later in his career, but I think he was just a paid spokesman. He was such a good shot contrary to what he said in endorsements he did not need that product. He got damn good way before any glowing, good thought bad idea, bead came back on the market.
Threaded Mode