So far that 3/4" group above is the best I've got, the standard velocity CCI is right around an inch. I'll bed this stock and also try some target ammo, and I may look into a different stock. In the end I may have to admit that 1/2" at 100 is only a dream and settle for 1". Not that I'm complaining, 1" groups at 100 yards from a suppressed off the shelf 22 is pretty darn good, but I have to try. :)