Oscar,
Please bring me up to speed on the “issues” the chamber is having?
50 West - I was running out the door. It should have been chambering. Corrected.
It’s a challenging endeavor – NOT, specifically, Warner's customer's chambering (cartridge). [I have no configuration data on it, but have spoken with Warner's customer and sold him some of the bits and pieces from my project.]. It’s what you have to deal with to get acceptable, consistent performance - available powders and primers (ignition system).
My "design" uses an action "type" similar to those used to throw mooring lines between ship and shore - with a screw-in/out, shell-holder bolt. It also uses electric primers and a stand-off actuator. The Winchester PA-520 electric primers I used are the ones used for the 20mm Vulcan cartridges/casing I'm using - casings which Warner formed for me and built dies for me. More info at
https://www.snipershide.com/shootin...out-most-recent-reductions-in-purple.6944186/
In re Dan's concern about functionality, IMO you first need put things in perspective. That requires having a functional design that meets you’re your project objectives. My approach was going to be at least a two-step. Step one, prove that the cartridge would do what I wanted it to – in competitive, extreme ELR shooting.
While I could not guarantee powder, I did have a ready source for Vulcan electric primers (and new cases) - and I bought 2K of them (and 250 cases). [I did not buy percussion Vulcan primers because that would have required a more sophisticated action design, one that I was not, in the beginning, ready to belly up to – nor did I have a design available from an established action manufacturer or one that was willing to engage in development and 2-3-off production.]
I bought samples (2 lbs of each) of 8 very slow burning powders (bulk, pull down, surplus), ones used for the 20mm Vulcan and similar cartridges…simply for ballpark testing. Reality check - getting same-lot, “fresh”, powder is a gigantic issue. It’s compounded, big time, by the lapse between initial acquisition and established, real-deal need. Basically, it’s a start-over each purchase unless you buy quite substantial amount up front…AND assuming your source has the actual lot number AND has stored the powder properly. FYI, a 20mm Vulcan casing accepts about 750 grains of powder (3X of a .50 BMG), so about 9.33 loadings per pound.
Enough for now. I wish Dan’s customer well.