I use a Redding BR30, and I mostly don't worry about weight variation.
Here's an example. 41.5 grains of 4895 under a 168 in LC brass is a very standard load for the 308. I'll fill the hopper and throw twenty charges to settle things. I then throw ten charges together and weigh them. If the scale says 415 grains then I call it 41.5 grains average. If not I adjust until I get 415 grains. Put the dial setting in my notes for future use. After that the charges are thrown directly into the cases.
My 5R Milspec put fifteen shots under 3/4 moa when testing the procedure.
I've shot a couple of ten shot, half moa groups with long stick 3031 loaded the same way for my 40X in 308.
3031 is kind of an amazing powder, when you think of the places it shines....and how old it is
