A good optical sight is the single greatest aid to wing shooting you could ask for. For long range waterfowling it was great. You do not have to "look at the bead", the optical dot is right out there in the same focal plane as the target. You don't have to try to focus on both things, it natural. They did not develop optical sights for fighter pilots for nothing. Head position and nothing else matters as long as you have the dot where you want the shot to go - the right distance in front of the target - and that's where it will go. I used a Lyman Quik-Point very successfully many years ago. But, it was bulky, heavy, and I had eleven dozen mount issues. I have viewed the SpeedBead with great interest, but I have heard there have also been mount issues with these. I do not have any personal experience. I have seen the other Burris model mounted with drilling and tapping, but I will not drill a receiver, just a personal fetish. The Speedbead mount is a no gunsmithing, removable affair.