Do you powder dipper guys use a scale? I started out with an RCBS RS-5 kit plus a powder measure. I just can't imagine doing it any other way at all.
I load in batches of 80 (50 for 50 bmg) because that is what my case tray holds. It takes me about about 45 minutes to size, prime, charge and seat a full tray This does not include case prep including cleaning, sorting, trimming/chamfer/ream. Including this doubles the time, quadruples if you include actual time in the tumbler.
This is why I enjoy shooting rim fire so much.