Shaman, is there a reason you don't want to use your twice-fired brass?
I've got 3 piles of brass for this rifle at the moment:
1) The unfired brass that came from Grafs when I acquired the rifle
2) A batch of brass that's had a few loadings and is partially used
3) A couple of small lots that I used when I was developing loads. Even if I threw them all in, they'd be too few.
I intended to pull brass from pile #1.
Got it, makes all the sense in the world. Good hunting.