I wouldn't tackle it MYSELF. They can be a REAL NIGHTMARE to make feed. I know of one instance were the sacrifice of farm animals was needed to make the Mauser Gods happy. It will take some work, and time, but if you want to by all means.
I would just stick with a 30/06 myself, in fact that is what I did. You don't give up much (what is a 200fps between friends?), no problems making them feed, less powder and recoil and a couple of extra rounds in the magazine.
Your mileage may vary..........