I couldn't make RL15 regulate, but that was this individual rifle.
One thing I would add to Ray's advice is to make sure you're holding the gun like you would if you were hunting. It is best to use a standing rest (I built one--they are essentially a tall bench rest), while resting supported forearms/elbows and taking a firm hold on the rifle. This can make a difference at longer ranges. While I know these guns really only need to be minute of buffalo, they will shoot very well with just a little care.
