Perhaps someone should come out with a .375-06, or .375 Whelen. That would be something I'd like to see.
Its been done. There is loading data at reloadersnest:
http://www.reloadersnest.com/frontpage.asp?CaliberID=193It's not hard to jack up the pressure and make a smaller cartridge perform like a larger one. I see people use this method on here all the time to justify their personal preferences in cartridges. People compare their pet AI rounds loaded at high pressure to mild factory rounds in the parent case. The 280AI is one example. It's laughable.