even with your old 3 holer, you're still MORE efficent than having to screw/unscrew like you do with a single stage- twere me, i'd never go BACK , even when i started with the single stage, i had 2- and a powder measure in between- decap, resize, prime on one, then powder charge and bullet seat/crimp on the other- and then i switched to the 3 holer turret, and my production went up by at least half , even without the auto-index- i ended up getting a dillon 550 in the end as i had 4 m14s to feed and the turret couldn't put out enough- but that was when we had 20 round mags- now, all over again, i'd go classic cast turret 4 holer= even for a few bucks more