Start with a custom action from Borden or Defiance. THey are Rem 700 clones and way more gooder than buying a Rem action and having all the work done on it.
www.bordenrifles.comwww.defiancemachine.comBuying once is one of many benefits of custom actions.
If I could go back in time, I'd have built a custom with aftermarket parts, chambered it in 308 Winchester & been happy for the rest of my hunting days.