I know this daryl
anything elso than 9mm parabellum is not economic. this brass is cheap and available in large amount.
I have to made inside expander to bring the case body over .407 without making the case asymmetric.
dont know if its possible I will search it
the mould have to be for a 145 grains bullet so it is close to the 210 grains bullet weight with a 9 mm case.
I will inform you about my success or failure! its not for the money, with all the work connected you can easy buy factory bullets. its for independence!

kiwi bloke good work