I know of several reloaders who weigh their powder on a second "check" scale before putting powder in the case. This is a practice that I was taught is a big no-no, and one that I have always discouraged. Of course I learned on and still use beam scales. And always sort of figured electronic scales were different. Why? Because you zero a beam scale, you calibrate an electronic scale. my issue with electronic scales is that they are: #1 - slow, and #2 - they don’t always return to zero. Granted, these are problems that go away with the purchase of quality (expensive) electronic scales. I recently watched a video that made me think that just maybe there is not much difference between an electronic scale and a beam scale. A automatic dispenser was used to bring a powder charge up to close to the desired weight. Then the powder was moved to a second scale and was trickled up to the desired weight. In each case the second scale was 3/10 of a grain off when the charge was moved from the dispenser scale to the check scale. This was after the scales were shown being calibrated. Just thought this was interesting.