At normal (20-25yd.) Turkey shooting range, gun shoots 8-10" high. I'm killing 3 out of 4 birds shot at but only hitting them with the bottom fringe of pattern. The 4th bird I'm hitting but not killing. From center line of the bore the top of the rib at the receiver is 1/4" higher than at the muzzle. I know the easy answer is to aim low but as hard as I try when it comes to pulling the trigger I'm looking straight down the rib. Don't want a scope, 10ga is already too heavy. I think I'm looking for a removable (snap on or screw on) front bead/sight that the top of bead will stand 1/4" above the rib. Any suggestions?