Looking for info (cartridge drawings and loads) for a new wildcat,
the .32-30 IMP made from .357 Max brass.
Any help would be appreciated.

One of the single shot forums might be able to help. ASSRA or the Wyoming Schuetzen Union.

I guess you are talking about something like the .32 Miller Short only longer.

Remington originally produced the 32-30 Remington, and the 357 Maximum case can be easily formed into this cartridge. Full specs for the Rem. 32-30 are available in Cartridges of the world 7th edition.