Well I am having trouble getting any groups with these iron sights. A little background, I qualified Expert every year in the Marines with my M-16A2. That course goes to 500 meteres. Those targets aren't for groups though. You just have to hit the black. But now I am trying to get a group out of these hunting leverguns and I cant do better then a 6 inch verticle string at 100 yds. So how does it work? I noticed that the bead caover about a 7-8" circle at 100yd. Do you guys just cover the whole target with your bead and let the bulets go somewere in that 8" circle? Or do you try and place the top of the bead were you want the bullet to stike? I was thinking of replaceing my beads with flat posts from Ashley so I can see my POI resting on the post. Thats the way I did it in the Marines, half a circle siting on the post. Thats about as accurate as you can get with iron sights I think. Having the intended POI rest directly on the tip of the post. Well help me out here please.