GypsmJim
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That could be a dangerous approach. All you learn is an average, but you really want to know the STD.I always set my powder measure like this:
Say you want a 10 grain load of XYZ powder. First, set your scale on zero and calibrate it if necessary. Throw a charge and weigh it. Repeat until you get the weight of gun powder you want. THEN, change the scale to ten times the weight you're wanting. Throw TEN loads into the scale pan and weigh it. Let's say it weighs 99 grains when you were expecting 100. That means it averaged 9.9 grains. What I like to do is throw another ten and see if it repeats. If it does, you can either bump it up and repeat or leave it alone, If it doesn't repeat, lighten it up a little bit and trickle feed a little bit more to each powder charge until it weighs exactly 10 grains.
Say you get seven 10.0, two 9.0 and one 11.0. The total is 99, but you actually got 3 loads that were very bad.
My approach is to drop 10 charges and weigh each one. That will tell you whether your equipment is capable or not. If you are loading for a match, and you weigh each bullet and case, a trickle charger might be the way to go to weigh each powder charge as well. But I hate the idea of weighing each charge because of the extra time it takes. If my dispenser does not meet my requirements I would sooner buy a new one. Fortunately, I never encountered that problem.