I have always been bent to the 6.5mm cartridges, and I would go with the Mod 28S and the 6.5 Rem Mag if I were ordering a NULA today. I copied John B's rifle specification when I asked Melvin to build my .30-'06 with a 24" #2 contour Douglas stainless barrel.
I prefer factory cartridges to wildcats now, even though the 6.5 Rem Mag is barely hanging on the the factory label.
jim