That came to mind..
As a fan of classic European sporting guns and importer (Classicsportingguns.com). I've done a lot of case forming for those obsolete calibers.. Some of them take several steps and annealing is needed as the brass work hardens. Having tried many ways to do it, this is the best & easiest way I've found. https://www.youtube.com/watch?v=JefeULWk494
I also anneal bottleneck brass every few loadings so I don't have to form as often. The brass lasts longer.
Also, if you can find a copy, A great book on the subject with "recipes", techniques, forming and load data and peripheral stuff like odd size bullet swaging dies, I recommend George Nonte's Book: "The Home Guide to Cartridge Conversions.
Greg