I used nothing more than a Lee factory crimp die and turned it down some. It worked perfectly. THe hardest part (other than trimming the brass), was expanding the case mouth. My expander die wouldn't turn down that far, but the expander on an old Lee Loader in .41 Magnum works fine, just tap it on and the case is expanded enough. Much better than having to go out and modify a die. Another way is to take a wooden mallet and tap the case into the expander die by hand. Then put the die into a Lee Hand press and put the shellholder on to the case and the die arm at the same time and pull the case out that way. More tedious and I don't want to do any damage to the die, so the Lee Loader is much easier and quicker.

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