The Rem Mag family has a lot of potential that most folks don't realize. Remington didn't help their own case and they seem to be long forgotten to most.
The 8mm Rem Mag and 350 Rem Mag are among my favorite cartridges though. I've seen what they can do and have loads of faith in them. With the new Badlands .323 250gr coming out, it really puts the 8mm back into the game. If I could swing it someday, I'd love to build a custom 8mm Rem Mag and to take advantage of the new potential!
From top to bottom:
M700 BDL 6.5 Rem Mag
M700 BDL 350 Rem Mag
M600 350 Rem Mag
M700 BDL 8mm Rem Mag
Each of the BDLs is factory configured from Remington. The first two aren't very common with around 1,500 of each being produced (to my understanding).