The Lyman #50 (iron hopper) and Lyman #55 (clear or aluminum hopper) were designed to drop accurate small charges. The feature that makes this possible is the "Hammer". The hammer looks and works like a tiny door knocker. (You just flick it up and let it drop down.) Makes very consistent powder charges. I have the Black Powder variant (aluminum hopper), don't try BP in a standard model!
I have produced similar results using a screw driver handle to lightly smack the powder drop near the powder chamber. Raise the handle and whack, lower handle and whack! Do this when adjusting too.
That works on 32 ACP, on 32 S&W, and on 32 S&W Long. I do this with HP-38, WW-231, Unique, Bullseye, and Trail Boss powders.
In SASS and CAS we have a side match where we shoot playing cards on edge at 5 yards, these loads are that accurate. (I use a Davis Derringer in 32 ACP with 32 short loading data and cast 78 gr RN bullets.) Many people use Iver Johnson or S&W top breaks. Only 32 S&W, 32 S&W Long and 38 S&W calibers are permitted. (No rim fires)
Ivan