Winchester x-150 just a rebranded CVA brought to you by the parent company BPI (Blackpowder Products, Inc). It may have a few minor changes like a solid stock vice a hollow one, but a CVA none the less Does it appear that the "blueing" seems to flake off (especially around the muzzle). The rust seems to want to settle in to this exposed area and continue to eat away, right? I had a lot of success with a liberal coat of CLP. Short of re-blue outright, that's pretty much your only option. I don't even think you could spin a new barrel on to it...nor would I .