Considering ALL sporter barrels start out as bull barrels and are essentially "recontoured" to become sporter barrels, I see no reason why it would be a problem or how it would induce any stress.
All button and cut rifled barrels start out as bar stock which is cut to length, deep hole drilled, reamed to the finish bore size, then rifled. From there the process can proceed in one of two ways...
Option 1: Exterior of barrel is finished out (shank threaded, turned to final contour and crown is cut) and then the chamber is cut.
Option 2: Chamber is cut and then the exterior is finished out.
Which order is used makes no difference what-so-ever - it's just a matter of how the manufacturer has their shop setup that determines which order they go in. Savage uses Option 1.
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