Glad you like your new toy :D I've heard a lot of negatives about the concentricity tool lately. I've had mine a couple years. If I check for bullet concentricity, adjust to say.0015" R/O, then recheck the R/O at the body just below the shoulder in my Forster concentricity gauge ( V-blocks located on bullet & on base) the R/O will always be .0015" or less there also. Took me a while to get accustomed to adjusting R/O as it's easy to adjust "over center" & push R/O to the opposite side of bullet. All in all I've gotten really good results w/ the Hornady tool