Great to see you are building one too, If things keep going this way they will be common again. I was going to build one on a standard length Mauser action, but the Brno 602 action came along first. The standard length mauser can be a bit tricky to get it to feed, I would look long and hard to find a gunsmith who has done it before successfully first. Don't forget the photo's and a full acount of the details.

Cheers