Been using H-38 in my .45 ACP and 9mm Mak reloads. It meters and works so well I decided not to try to fix what isn't broken. Once I set my dropper, the loads never vary. 3.1 grns one the first drop is still 3.1 on the 100th.

Clean? That's subjective, but I clean after every range session, so it really doesn't matter. Washing a weeks worth of dirt off a car isn't any harder than washing two weeks worth off.