When you get the unit working, you will understand what I am getting at. There is no point to a powder measure... or at least a way to dispense to a tenth or two away from target weight. The trickler needs a run up to the final weight. Too close and it will not start.
I found a min of 1/2 grain away... 1 gr is actually better and FASTER. When the dispenser gets up to speed, it is dropping a grain of powder in a few seconds. Then it can ramp down cause it can see the rate change of the scale.
The good ole Lee plastic scoop is ideal.
The level of the output tube makes a big difference in overruns so if necessary, shims of a business card or two to get that tip level or a bit high will make a huge difference.
Once you get it set up and working as it should, it will blow you away at how fast it can get you to the kernel of powder.
If time is money, the time I have just saved in the few months of useage has purchased the dispenser.
Jerry