I think number of shots per group depends on your focus. Most hunters are very happy with a tight 3 shot group, because most (not you, Ed or Jeff!) may not fire more than 1 shot on a hunting trip. For more serious target shooting, 5 shots is a minimum, and other factors can influence the number. When I shoot my Cyclone, I tend to shoot 8 shot groups, just because it has an 8 shot magazine. For my single shots, 5 or 10 is my norm, although that can depend on how well I'm shooting :-). Some days, one shot is too many! Later.
Dave