Zach
It sounds like you will have .030" more relief and .030" less thread. Since Mauser thread is 12tpi or .08333" you are talking about 1/3 thread which should make no difference. Go for it. Jerry

I have a question for you all. I was threading a Mauser barrel. Normally I cut a .080" wide relief near the shoulder. Well, my brake failed to disengage and the bit ran into the shoulder. To clean up this little mishap required widening the relief to .110". Is this too much? I can simply shorten the breech end and recut new threads. There is plenty of support left in the barrel for the chamber even if I shorten the barrel. Opinions please.

When I had my father's sporterized 98 rebarreled a few years ago, the barrel that came off had only four full threads engaged. From there forward to the shoulder the barrel shank was relieved. The barrel was a Douglas chambered for 7mmRemMag. The barrel never let go, but it never shot well either and that's why we had it rebarreled. Used a different 'smith, though.

We were taught to remove one thread from the action while cleaning up the face. I was very reluctant to do this at first but after dealing with the relief cuts and the ensuing pain in the butt that they are I will be employing that technique on all future Masuer actions. I still have a bunch of actions that I had carburized and none have the thread removed. For what it's worth the relief cuts I have made tend to run .065" That's about as small as I could go and still cut a proper thread.