I looked at that Hornady tool but bought the forester concentricity gauge instead also look at the Sinclair and 21st century. I felt like if I was trying to fix concentricity issues of every bullet that meant I wasn’t spending time fixing my reloading process. I am very happy with my decision because I was only finding maybe 3 rounds per hundred of .308 that I considered practice rounds. Those rounds still shot well so now I only gauge ammo during reloading sessions to lock it my process. I also use it once in a while to check ammo that is match bound. I am not convinced pushing the bullet around in the neck really helps anything. I feel the best thing is process and reloading equipment you understand that produces consistent results. If you can I would try and borrow a concentricity gauge first to see if you value in the extra work.