Good luck with the dies, Rifleman and Babydriver both have been waiting for CH4D to produce a batch of them. I got mine used. As for brass, they can be made from 303 brit or 30-40 krag. My Hepburn likes the R-P 303 brit cases, PPU cases are too fat at the base for her. Headspace is slightly off but that can be remedied with a custom washer, I've heard of people using O-rings as well. Also some have said that 30-40 resolved their headspace issues.

Logan

Back in the summer I paid for two sets and that put us over the requirements. He said 6 months but as nice as they are I’m not going to the bank on that.
If you want one of my two let me know. Price will be what I paid.