I've never had the best luck with loading cast in 9mm. I've done it off and on for many years with mediocre results, so now I'm getting serious about making it work.
I have two 9mms, a couple of old Hi-Powers. One bore slugs .356 and the other is .358". I'm tempted to save up and buy another barrel for the larger one.
I have a really nice Accurate bullet mold, 125gr TC design. They drop at .358". What do you all use for an expander die, to open up the brass a bit more than normal for the larger bullet when necessary? Or is this even necessary? I'm not a real big fan of the expander design of the Lee die set, or the Dillon drop tube.