I'm afraid that unless you can do a substantial amount of metal work yourself on your project, you would be much better off buying a good used Savage which has swappable barrels and go from there.
You would need to D&T the Mauser receiver, alter the bolt handle for scope clearance, install the barrel and ream the chamber to final fit and proper headspace, and that's after action truing and checking for high percentage lug contact and it goes on and on. It can be a daunting, time consuming task, but if you have skills that were acquired over time, and the dedication to apply those skills, the end result can be a source of pride.
couple pics of my builds.
The 22-250 is a Turk action that I threaded a Remington barrel to fit, Bold trigger, Millett scope, Hogue stock, flat black Duracoat finish over parkerized wash.
The 8MM is a Turk action with a commercial Swede barrel, Bold trigger, Corelite stock, cheap scope, stainless Duracoat over parkerized wash
NCsmitty