I was looking into "blueprinting" a Rem 700 action & I was surprised to find a number of specialty gunsmithing tools just for that purpose.
One tool is a set of bushings that supposedly centered into the action & a reamer aligned in the bushings bores the hole straight by taking metal off the thread tops. Then the equivalent of a giant tap, using the bushings again, is turned in to re-cut the action threads. Would this really work? Seem like it would just chase the original threads and/or make it sloppy? Have any smithy's used these tools?
It's a 1.5 min video here:
Looks too good to be true! Could this be as good as the ol' hand/lathe work? Any thoughts on this & the whole process.