If you like the donor, a JES rebore might be worth considering.
If you think that a take-off barrel from a Husqvarna 46 or SR 640 in 9.3x57 would work, it might be worth a call to Simpson LTD in Galesburg, IL, as they are probably the biggest importers of used Husqvarnas in the U.S.
My Mark X in 9.3x62 has a Lothar Walther barrel and I'm very happy with it.
