Another example of a takeoff barrel working is the common practice of rem.700 barrels fitted to a '96 mauser. This can be done in less than 1 hr, and sometimes without a reamer. Prob. not as common now as the '96 rifles have a lot of value in milsurp circles but 20 yr. ago were avail. for 20 bucks. I have at least a dozen of these and most of my grandkids and nephews have 1 or 2. Is it worth the trouble, depends on which way you look at it. In our case I had a pretty good hunting rifle for a few hr. work and less than $100. The rem barrels also work on any large ring, small shank Mauser such as the Turks. In all cases it's a matter of turning off the rem threads, rethreading and machine off the 'third ring of steel. Sometimes the headspace is within tolerance as is, sometimes not, and then sight alignment issues. Works for me, Mark