Yikes, you guys are getting some great groups! I just retuned my Harrier for more shots at lower charge pressure. I am running around 19 ft-lb now and getting a solid 25 good shots per 2400 psi fill. Accuracy is still good at around 0.60" at 50 yards, sometimes better, but not quite what I'm seeing here. Obviously I'm due for an upgrade! As someome else said, the .20 caliber really comes into its own in guns of medium power, around 20 ft-lb. or so.