Hi again Peter.
1: You will be disappointed.
2: Only surprised that with all metric dimensions, you used SAE here.
3: Stronger yet if you do away with the additional .2mm depth
4: Wrong direction. I have one at 19mm and it's too large. Bullets still hit the barrel cone which on my rifles is 60 degrees, not 45, and I am talking about a 416 Rigby case without the belt that will tilt the case down even more.
5: I fully understand.
6: Your inside receiver ramps are what I was referring to. They will be difficult at best.
7: Yes I think so. It's my personal preference after having made both.
8: Unnecessary expense for no gain in performance.
9: I prefer another method for several reasons.
10: I would like to see tooling for that. As I said, Sinker EDM only. How else will you make a 4th axis move, with your 45 deg lug engagement and a radial profile to match at the same time. Not happening with conventional tooling that spins.
11: My system does not have to return to zero because it doesn't move to begin with.
12: I have the basic knowledge. I've already built mine. Already shot it, and it's proven to work. I've designed a thing or two in my day as well. Most of them have been successful.
Absolutely then, get started and follow through with the production. Just, get two blanks made and roughed out, so that when you find the problems you have with this one, you can get started on revision two.
I like your choice of materials and most of the design. However, I disagree with some of the details is all. Of course, My reply was not for you to dispute, only to read and not reply to!