No worries, I'm pleased with how they both turned out.
The case forming, that was a research exercise largely, not as hard as sourcing the projectiles, obviously there is no factory cartridge that comes really close in dimensions the original has a semi rebated rim, and the long taper that allows easy feeding in a straight pull. In the hunt for a case I did a fair bit of research, the prevailing strategy was either to neck down a .375 H&H or size and fireform a .300H&H. My special brain didn't like the idea of having a belted case used for that job, mostly from an aesthetic point of view (although only I would really be seeing it) and fortunately someone had used the .375 Ruger for donor cases and it works. A search in NZ revealed that no-one had it in stock but thankfully someone was selling 50pcs hornady brass on the yellow site. To form the cases is pretty simple, full size .280 Ross die and case lube taken in very slow bites.
Attachment 227612
Attachment 227613
As you can see there were a few collapses, I expected this and got away with 45 formed cases. Have tested them and they fit & feed well.
I will say, I have fired and used a fair few straight pulls, including some very high end ones, the Ross action is as smooth if not more smooth than all of these. Pretty impressive for 100 years old, I'll update more about the ammo situation when I have a bit more time.
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