but it's time consuming to get the powder measure & drop readjusted
I use my calipers for this: Once you have the drop set up for a particular volume/powder combo, use the depth measuring feature of your calipers. Set the bottom of the calipers on the powder measure adjusting screw, and dial out until the caliper shaft touches the locking/tension nut. Record that measurement and match it the next time you use that load. The flat top of the adjusting screw helps with consistent positioning of the caliper. I usually use the standard pistol insert. I have a "micrometer" pistol insert but it's nearly impossible to read the markings on that thing.
I usually end up within a tenth of a grain on the first throw.
Some folks buy a new insert for each of their production loads but that can run into a bunch of money.