I have a new, unfired magnum stainless Savage 110 action that had come from a donor 338 mag that I would be willing to sell you. I bought the rifle as part of a 3 rifle package, with plans to build a custom gun. I later changed my plans and the action has been sitting in an oiled rag in my gun room for 3 years. Jim at Sharp Shooters Supply has already done all of the smith work to it, including a trigger job. It is a non-AccuTrigger action though. If you can live without the accutrigger, it would save you a LOT of waiting time.
I just registered on the site to ask some questions about having a 280ai built by one of the smiths here (recommended to me by a friend from another site) and I saw your post on the first forum I entered. If you are interested, just hit me with a PM. or you can email me at firstname.lastname@example.org