I 'm building a Tikka T3x in 300 Win Mag, and am trying to select a scope and rings for the setup. I'm leaning towards a Vortex Razor HD LH 3-15x42 in a DNZ Game Reaper Mount. Does anyone know if I should use a Low or Medium mount with this setup? The 42mm objective seems to be right on the border between the two, and of course I'd prefer to go with low.