Folks have experimented with altering the M1 Carbine to fire other rounds. I knew a guy who had done a fair bit of work making M1 Carbines fire the .45 Win Mag round. I don't know whatever happened to him or his project, but he got mentioned in a back page Jeff Cooper blurb for his efforts.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.