The stacked bead thing is more of a trapshooter concept. POI on a trap gun is supposed to be high because the target is rising. Lead is built in. The sight picture is generally the mid bead at the base of the front bead in a figure 8 pattern. When Jimmy W referred to his trap gun shooting 40/60, that’s a new one on me. I’m sure Al Ljutic forgot more about trapshooting than I’ll ever know but to shoot the bird at it’s apex is just, weird. When I shot trap I’d try to shoot the singles quickly to establish my timing for when I shot doubles. But I digress.