Last night I was making some loads for my 357sig with a Hornady powder measure . Every 10 or 20 cases I put a measure of powder on the scales. Since switching over to the pistol scale it has always seemed to go up or down a grain or so. So anyway last night I'm making some loads and then I noticed that the case didn't look very full. It went from 8.0 grains to about 3 or 4 of Longshot. So I made the adjustment and went back to loading then not long after, it did it again. This is dangerous, so today I sent for a MTM digital scale with tare weight capabilities. That way the loads can be measured easier, faster and most importantly more accurate while loading on the fly, because I can't trust the measure any more. Any suggestions on a powder measure or what's wrong?