Depending on the condition of the barrel, it along with any other parts that you swap out can usually find a home with someone else doing the same thing.
The last couple of Cabela's sales on the 12FV, had alot of guys doing just that. Of course new take-offs carry a preminum, but still lots of good, used barrels sell as well.
Much like AR's, with a few basic gunsmithing tools, Savages are very home bulider friendly.