Two touching and one a half inch away is really a pretty good group. I wouldn't even worry about it. However, with that said, I have found that most "flyers" are most often caused by shooter error rather than by the rifle. Sometimes we tend to do something we are not even aware of to cause the flyer. Try to conciously keep everything exactly the same for each shot. You might also want to let the barrel cool for a couple of minutes between each shot. If all of my groups were like yours, I would be a very happy shooter.