Thanks for all the ideas and input. I think I have decided....
I already have Whelen dies and bullets. I can get Prvi 7x65R brass for $108 per 100 shipped. I will need to have the barrel rechambered so I can also get the rim counterbore done at the same time. My plan is to anneal the Prvi brass for more durability and neck size to 30cal, then to 35 cal before I run it through a Whelen FL sizing die. Anything I have overlooked here?
If this works as well as I hope, my 35cal desires will be satisfied. 357 Maxi, .356 Winnie, and 35 Whelen R.
Thanks, Dinny