I used a Lyman powder measure and a Ohaus 10-10 scale for over 40 years. I bought a RCBS chargemaster 5 years ago. I load rifle ammo every week, the chargemaster for me, was a good investment. It is a time saver for me on the bench, and it is accurate. When I first got it, I would spot check powder charges Periodically on my beam scale, haven’t done that for several years now, as it was a waste of time.
I shoot long distance every week with various calibers and the chargemaster helps me build good, accurate ammo to send downrange.