Good luck with your build.

If a person is going to spend some money building on a pre-1898 style military Mauser action, I think that the Husqvarna M38s are the best in terms of materials and workmanship. While they retain the greatest weakness of the pre-1898 style Mausers, the small gas shield, that is only a handicap it you have a case failure or pierced primer that allows gas to escape toward the rear.