I think you're better off finding a good commercial FN or similar for both projects.
But can you even get a 270 WSM to work in a Mauser 98 without a ton of modifications?
Whoever you have build them better be really good at getting an odd-shaped case to feed/function in a M98. The case is completely opposite of what a Mauser was designed to handle. I can see new mag box, lots of feed rail modifications etc.
Maybe the gunsmith experts can chime in and shed more light.
