[reloader762]

There is a wildcat cartridge call a 357/30 or 300 MAX Cat.

 

[reloader762]

Doesn't that start with a .357 Maximum case?

I stand corrected as the Max Cat did use the 357 Max. case, I did have the 30/357 correct as that is a true wildcat cartridge. Honestly I've never heard of either until I did some research.