I can say that I set it to 4.6 gns of titegroup with the powder hopper full, loaded 528 round of 45 acp with it and never had a charge vary more then a tenth of a grain. The last rounds I loaded were with the hopper almost empty, the funnel of it wasn't even full, and I was still getting 4.6 gns. Shot 250 of them them the other day and all went good as far as powder was concerned, I had one high primer.