I'll have to put in a vote for the Lee set too.
If your rifle is like mine and JPH45's, you won't be needing an expander plug either. Just seat a 380" cast bullet over your favorite powder charge in a fired, NOT RESIZED case, then run the loaded round into the sizing die (with the decapping stem removed, of course) just enough to allow it to chamber, and go shooting.
I'm using a Lee universal decapping die to deprime my fired cases, they need not be resized to hold an ew bullet of .380" diameter.
If you're stuck on using jacketed bullets, you'll need a factory crimo die too, and will have to resize your fired cases.
Good luck, and please keep us informed as to your results.