Mike;
A lot of this is from memory, but some years ago I bought some of the CBC shells while Navy Arms was listing them. I still had some of the Fiocchi primers on hand so as shipping was prohibitive on the primers by then thought I would use them. I tried to prime a case & the primer would not seat flush with case head.
I checked the depth of the cup & from that standpoint it should have worked, so figured out the cup was not seating to bottom of pocket. I still had some of the older Alcan/Fiocchi hulls so got out some of them for comparsion. Upon inspection the anvil in the CBC was visually higher than in the Fiocchi. A measurement with a Depth Micrometer proved this appearence to be definitely correct. The priming disc in bottom of cup in the Fiocchi was thicker than that in the CBC. I suspect the CBC primer in a Fiocchi case would result in a lot of misfires & I personally would consider it a dangerous proposition to try to forcefully seat a Fiocchi primer flush in a CBC case.
