Hi to all. I'm new to reloading, and just got a Dillon 550B. I set the powder measure to 4.0 for a load recommended by a friend, and checked a few on a scale until I was sure. Then, I began reloading, ...but as I continue to check, there is a variance of about +/- a tenth of a grain. Is this normal? If not, does anyone have suggestions? Thanks and Happy New Year!