The sky's the limit, close your eyes and pick one. Example: one of my (several) R2 Lovells was done on a M1903 action (well before my time) - bull barrel, custom trigger, Unertl scope blocks, etc. Extractor hook built up to grasp the small case, and a little ring of steel affixed to the bolt face to encompass the small rim. Single shot, of course. All that is just to say that there are fewer limitations for a Springfield action than you might think.
Always thought I'd like a .400 Whelen on a Springfield. Then I would slap myself for thinking that, as I have absolutely no use for one and detest getting pounded by each shot. But still....
