I cannot argue with your logic and it seems it has worked for you. I assume you have all your fingers. On the other hand, I need to feel that my loader is delivering what I asked of it. Once set up, I will measure a string of half a dozen loads and then maybe another string to feel secure that my drops are correct. Usually, they will be within 0.1gn and then I will test again after about 25. If something is wrong I can stop and fix it. So far, I have all my fingers.
Again, on the other hand, I purchased a bunch of one pound Winchester powder and as I go to the next bottle I have seen up to a whole grain variance between the one pound bottles. Add that to a machine error and a poor performing scale and that could be an unfortunate problem.
