depends on what you're doing and how much- you lose a bit of speed if you have to remove the auto- index, but you gain in not having to screw/unscrew dies- you also do one round at a time from re-size to complete whereas you do batches with a single stage - ie 50 rounds resize, 50 rounds primed, then powder charge, etc- as to whetjer it's faster, i would say yes, at least double, if you get a rythm going and no hang up- esp with the primer feed- i went from single to turret to progressive, and i still use my turret for doing small batches of things like 338 win mag- with the auto- index disabled