Not sure what to say on the re-barreling, but if I may offer a suggestion on the ammo.
Try talking to and making a simple request to some of your more reputable pawn shops.
A few years back I picked up a .338 federal at a pawn shop in Statesboro, GA for about $225 with a tasco scope & half a...
Not sure if this helps, but I did a quick internet search and found this link. The person seemed to have the same problem.
https://www.thehighroad.org/index.php?threads/winchester-94-screws.760137/