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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!
 

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This happens to me too. Usually, like you said, about 1/10 of a grain difference every now and then. I don't worry about it since I load towards the min end of the chart to the middle (for handgun). When I load rifle for benchrest, I usually load low 1/10 of a grain, then I use the trickler to get it right on the nose.
 

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+/- a tenth of a grain is normal for a small flake or extruded powder. Probably less variation than in factory ammo. Go shooting.
 
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