I've always had a bit of trouble getting my powder measure adjusted how I like it, personally. There's a little variation that's unavoidable, so I'll have it set just right, and every once in a while it'll throw a charge a bit heavier or lighter. Nothing crazy, but it's noticeable on the scale, and the needle is a few millimeters high or low. What irked me was that I could never tell if the slightly heavy charge was just random, or if my powder measure was set a bit too high. Here's a solution I thought of tonight: Throw 10 charges at once then weigh those and take the average. So, if you want to throw a charge of say, 4.2 grains of powder, then you'll throw 10 charges and weigh it. If your scale is set right, that should weigh 42.0 grains. If you weigh closer to 43.0, you know your scale is throwing charges averaging 4.3 grains. If your scale shows 41.8 grains, then you know your average charge weight is 4.18 grains. If you set your powder measure by these averages, it'll help you avoid tinkering with your scale and adjusting up and down and up and down just because a random charge was a little high. Personally, I like to see my charge weights within a twentieth of a grain, or 0.05, so for my example, I would be okay if the weight of 10 was between 42.5 and 41.5 grains. This method doesn't work too well for heavy charges in big-bore calibers because a lot of entry-level scales top out at 100 grains of weight, so you'd only be able to average 2 charges at a time, but I don't seem to have the same problems with larger measures of powder anyway. For medium-weight charges, you can always just reduce the number of charges you average, though I wouldn't want to go much lower than 5, with 3 being the bare minimum.