Dispensers can be a real time saver.
I bought a older model used Lyman Gen 5, advertised as +/- 0.1 grain.
Looks NEW, IN BOX, $95, SHIPPED, NO TAX.
20 drops @ 31.5 grains of SB 6.5 (very fine ball powder), checked against my A&D EJ-54D2, gave me:
Min 31.42 gr,
Max 31.56 gr,
ES 0.14 gr,
Mean 31.48 gr,
SD 0.045 gr.
Set on auto, will have the next charge ready by the time I pinch up/down on the scale and dump into case.
Less work than using my Lee powder measure.
For 600yds I try to be a little closer than +/- 0.1 grain.