RE: with a bow at 20Yards how big are your groups?
Well, 2 inches at 20 yards is on track with the archers Minute of Angle. 1/2 inch at 20 yards would be shooting 1/4 MOA and that's machine-like. Are we talking hunting bows or target bows? I can shoot MOA out to about 40 yards, after that it opens up some. This is with a hunting bow shooting fingers.