JBG:

Thanks. I'm planning on restoring a Swinburn Martini from the mid-1880s and I'm looking for a cartridge that would be usable on elk and isn't .45 caliber. The .450-400 3-1/4 BPE is probably too long for the action. Steve Bertram suggested the .303, which is feasible but not particularly sexy. I keep looking for ideas, but still haven't found the answer.

Rem