To me the group size is not the most important factor,rather that a very,very high percentage of the shots strike a selectedtarget the size of the kill zone at whatever distance that you choose to shoot.However if the group islarger than the animals kill zone,it is obvious thatsome of the shots would not provide clean kills at that distance.I don't care how far a person shoots as long as he can consistantlyplace his shots well enough to make clean kills.