I've got a number of decent 1/2-inch groupings at 100yds, too, as well as several 200yd 1in groupings. But I can't imagine what it'd take for me to do a 0.35" grouping at 600yds.Is humbling. I have a few 1/2-inch 5-shot groups fired at 100 yards from a heavy barrel .220 Swift and one that may be completely covered by the mouth of a .38 Special case. Wagner beat that at six times the distance!!!