I like the BAR you have. I like the BARs a lot, but have never actually seen one in a magnum load, most of them I see are in the 308win or 30-06. If I want an auto-loader in that caliber I think I'd go with a Springer M1A. I think the more cost effective way would be to get a BAR and make a custom cheek-weld if I need it, course I'll be mounting the scope as low as I can. I not too sure if I would be realisticly be willing to shell out that much for an R1 unless I actually got to get my hands on one and see the features for myself, its sort of my pet-peeves.
Perhaps with the money I would have left over with a BARs lower cost I could just get a better scope and good ammo loading materials and practice. Because the 338win mag's ballistics have a big gravity pull on me right now.