Here's my take on the Chargemaster. It is a highly accurate powder THROWER. IOW, if you want to land exactly on the number everytime, then set the dispenser to throw a little light and nudge a few grains off the end of the tube.
Perhaps some pics, turn it on and calibrate with the supplied weights
Rezero with the pan
In this case I want to load 60 gr RL22 so I set the dispenser on 59.7 gr
and the dispenser will run and then beep when done. WAIT 5 SECONDS, and it will give the actual weight in the pan, in this case 59.9 gr
nudge a couple of grains off the end until you get the exact weight
Love my Chargemaster and would immediately buy another if it were stolen or irreparably damaged.