I play the 21 T100 irons and have been tinkering with my mechanics and swing thoughts and paying attention to my ball striking data/results. I have come to the conclusion that the true sweet spot is actually just inside of center of the irons clubface. When I catch the ball a touch towards the heel of the iron it is like butter. The ball just jumps, makes a different sound, and carries what I would consider true distance with average to minimal effort. I am wondering if anyone else out there has experienced the same thing. It has been a truly life altering epiphany moment. Am I imagining this??? Your Thoughts on this matter please....