Nice find!
If the barrel is bad enough, I'd rebarrel it with a vintage barrel before I would part the rifle out. Intact .220 Swifts are getting increasingly difficult to find and yours looks unmolested by recoil pads, side scope mounts, etc. In the long run, the the intact value will far outweigh what you could get out of the parts.
Depending on how old the ammo is you received with the gun, you may want to think about decapping them and reloading them with modern, non-corrosive primers. No sense exacerbating the existing throat erosion issue - those corrosive primers are the culprit and they will eat stainless barrels just the same as a carbon steel barrel.
Good luck with it!
