If you have to buy new dies to form the cases it may be worthwhile to just buy ready made cases from buffalo arms:

http://www.buffaloarms.com/30_Newton_Cases_it-160039.aspx

I've formed 219 Wasp (original "short" version) from 30-30 using a 4 die set since the 1970's. So I know laborious.
You can buy more dies and do it right, or just buy formed brass and have at reloading. Pricewise it might be a convenient wash considering the cost of parent cases plus the cost of dies.

Last edited by Deflagrate; 12/09/16.