My best group at 100 yards with my flint was about 4 inches. I consider that awesome and am very happy. That was shooting from a bench with lots of sandbags. if you let go of the gun it wouldn't move from it's aim. I had one flyer at that range though, about 7 inches from center of group. Maybe the guy meant that the shots were spread out with 1/2 inch separating some of the shots, which is pretty good to be sure.