I have practiced with a scale that measures to .02 and later with my tuned balance scale that is easy to read to .05 and which shows a single grain of Varget when read at a very close distance with a webcam. What years of experience have taught me is that being able to tune by loading at the range is important, and I have observed that electronic scales that weigh to very small tolerances do not like vibration, and are therefore unsuitable for use at the range to weigh every charge. I try to keep my practice consistent with the requirements of actual match shooting, and if a match is running well, with two relays, one has at most a half hour to tend to cleaning and loading between matches, so that is a factor as well. I record my loads each time that I go to the range, and I have seen repeatedly where slight adjustments from what shot well on a previous session were necessary. One more thing that relates to this is that when two shooters discuss what can be done with a measure, it is highly probable that they are using different throwing techniques. Some years back, I was prepared to buy a Chargemaster, but did not want to carry the additional equipment to the range if I could throw 133 to +- .1 gr. I thought that before I made the purchase that I would give it one more try with a measure. I had tried all sorts of variations that did not work, but my last attempt succeeded. The method is more involved than most would want to bother with, but I believe it allows my charges to be sufficiently consistent for my purposes. Technique varies for different powders and measures. What it all comes down to is that I believe that being able to adjust charges by loading at the range is more important than any advantage that might be gained from having more consistent powder charges than can practically be produced there. Like any manual skill, throwing powder well requires practice, and to see what you are doing right or wrong requires a good scale. From time to time, I check myself, so that long layoffs between trips to the range do not cause my technique to deteriorate. I also make brief notations as to measure technique along with load data. Finally, this is all a matter of spending ones time on the things that seem to make the most difference, and in my experience they are fine adjustment of tune, reading the flags, starting a record group in the best condition, managing ones time well during a match, and not being so reluctant to use the sighter target. Unless one is shooting in a rare condition, my experience is that at short range, these are all more important than holding powder charge to a tighter standard, and since I have been able to shoot some very small groups in the best conditions ( that I have never seen at a local match) with thrown charges, I do not loose much sleep worrying about charge weight variations. One advantage of living so close to the Visalia range is that I have been able to get to know, a number of world record holders, and hall of fame members, and observe how they load and shoot. They do not all do the exact same things, but there are some common elements. None of them preload. Again, this is for group shooting.