Re: Harrell powder measure, how does it work?
Harrell is a top of the line product. I spoke to the owner this past spring and almost ordered one directly from him, I probably will this fall or winter when I get a little more $ saved up.
Of note, I do use a Redding 3BR for loading 38 specials and I am very happy with the Redding but it did have a learning curve (as do all of these throwers). For one thing, as already mentioned these tools are finicky regarding powder choices.
The major lesson a friend taught me and I still do, is "practice throwing powder" - what this means is you have to establish a specific/defined rhythm. I do this by throwing charges into the original powder keg until I have my rhythm worked out and then I start filling brass.
Of note, I always empty my bottle immediately after each throwing session.