+++100 for RCBS Uniflow.
For me, with the right (Smallest) drum/stem, for the charge used, it is as accurate as any that I have used.
The ONLY powder that I have had the SLIGHTST leakage, around the drum, has been WW-296/H-110 Powder. And I am talking only about a grain/flake here and there.
If I run 10 pistol charges, weigh that, and divide by 10, I most always run to .2gr. (sometimes .1gr.) of my set charge weight=PLENTY Accurate for Book-Spec. charges..Bill