Yes, True Blue meters very well. I use it in my plinking .357mag loads and use an RCBS Uniflow powder measure. It measures repeatedly and does not bind the action up like flake and extruded powders do. However, I would not recommend using it in a Lyman Gen6 auto dispenser! Fine ball powder leaks quite easily and is a bugger to clean up. I won't be doing that again.
My Lyman was practically brand new when I tried it (had loaded maybe 300 before it). I don't get any leakage with extruded powders. I do have another set of scales, but since it meters so well in my uniflow with micrometer setting I just stick with that. I don't need to weigh every charge because it's so consistent, plus I don't notice much difference in the plinking rounds.Interesting, I use ball powders in my Lyman gen 6 all the time with no leakage. I used Win 296 alot which is like the consistancy of table salt. Only think I don't like about it is that its a pain to clean ball powder out of it. I know mine came with a set of replacement seals for the powder tube, mabey you need to replace them?