Why would you want to put a short action cartridge in a long action rifle? Why not put that 358 Winchester in a model 11? Anyway for a barrel you might want to try Sharp Shooters Supply, E.R. Shaw, Pac Nor, or Midway (used to sell them still might have some in stock). Another thing to try is posting on the Savageshooters.com forum and see if anyone has a factory takeoff for sale.
