I know they have been brought up before... but I have had one set of hornadys new dimension dies for a while, with the seating sleeve, and after getting tired of my seating not being as exact as I want, and tussling with my bullets, I decided to say screw it, and bought 5 or 6 new dimension seating dies for all the calibers I currently reload. I think they are the only way to go for seating alignment.