I'm going to be putting a Grayboe Terrain or Renegade on my R700. Eventually I might rebarrel and I'm trying to tell if a Bartlein #3 or #3B will fit in the Magnum or Varmint channel. I think, from my half assed calculations from the chart, it will fit. But I could be wrong, I don't know everything about this field yet, lol or even close. If I have to live with my Magnum contour barrel in a Varmint inlet then I will in order to future proof the build for a rebarrel.
Attached are Grayboe's and Bartlein's dimensions...
Attached are Grayboe's and Bartlein's dimensions...