I've always been interested just where different cartridge cases originated from. (i.e. what other calibers share/use the same basic cartridge case.)
Curious. Is or has there ever been a Parent Cartridge Listing posted here or on the net.?
being the parent of the other two. I think?
Another example: 25-20--32-20--? _ < Haven't a clue?
Thank you, for stopping here and reading my thread.