Put me in the column that prefers obscure cartridges! Just a few:

9.3 X 57R, old BP case on the 9.3 X 72R
8.7 X 55R
9 X 71 Peterlongo
10.5 X 47R
9 X 57 Mauser
40-82 WCF
40-70SS
45-2.6
45-90
8 X 56 M/S
11.15 X 60R
8 X 65R Brenneke
8 X 60R Magnum

And some not quite so obcsure:

9.3 X 57 Mauser
8.15 X 46R
7 X 64 Brenneke
8 X 57

And others.

I have some RCC brass and while it looks nice, I cannot recommend it. The brass I have came with my Meffert O/U double rifle in 8 X 60 Magnum. The brass had not been fired and a few cases were loaded. I don't trust many folks reloads and especially none that came through the mail so I pulled the bullets to check what the powder might be. It was supposed to be IMR-4895 and looked like it but, I used it for fertilizer anyway. The cases looked as if the volume was quite a bit less than what it should be. I compared the water weight volume to an 8 X 57 case and it was quite a bit LESS!!!! One couldn't get 8 X 57 starting powder charges in the case. I don't know what that was going to do with pressures but it seemed to me all they could do is increase. So, I ordered some 7 X 65R, RWS cases from Huntingtons and formed 8 X 60R cases from them and started load development. The RCC cases are on the shelf.