Well, this thread certainly went off on a tangent. The OP was asking about MAUSER re-barreling, not Savage. Different animal.....as the barrel attaching design is different....so NOT analogous. I don't know what torque is recommended for Savage barrel nuts...... but it hasn't got anything to do with Mausers, anyway.
The "crush fit" technique, about which I spoke, involved machining the length dimension of the (threaded) barrel shank about 0.002" too short to allow the barrel face to contact the inner receiver ring, when the outer barrel shoulder made contact with the receiver face. Then, the barrel was over-torqued, to force the barrel face to make contact (essentially, stretching the barrel shank). This is the technique employed by most of the arsenals which made and assembled military Mausers. I can't fathom the reason for it, other than some misplaced notion that it produced a more "homogeneous" assembly, or would guarantee that the barrel would never "back out" under vibration. It certainly prevented barrels from "backing out"...... as judged by the incredible difficulty in getting most original military Mauser barrels off. However, it has NO value that I can see, because after decades of experience with Mausers.....I've NEVER seen one back out, anyway. The thread pitch is only around 5 degrees, which makes it VERY unlikely that a barrel will unscrew itself, if torqued to a reasonable value. Firing and handling simply don't produce enough vibration in the assembly, to cause this.
Actually, 50 ft-lbs is fine.....but I don't recommend it, simply out of caution (you never know what actually number home gunsmiths will produce). Recommending 75 ft-lbs simply gives some assurance that at least 50 will be attained. But, I absolutely NEVER endorse the "crush fit" technique......it simply damages the threads.....and makes it far more difficult to remove the barrel later. And, as I said before, it does NOT provide any benefit. If one is worried about the barrel "backing out", for crying out loud, then simply apply a bit of NON-permanent loctite to the barrel threads.
As regards cutting the barrel threads to a different pitch than the receiver....then forcing them together......well, perhaps some do it. I've never heard of anyone competent doing that, though. I consider that monumentally STUPID, however.....asking for trouble.....and I'd personally strangle the gunsmith that advocated that, if I still could. A bloody good way to ruin a barrel and receiver...and that's all, if you ask me.