Personally I would go with something along the lines of a Remington Magnum Sporter at the most. A #2 Douglas or Remington Sporter would be just fine, too. The 20 caliber hole is going to add a little stiffness compared to a larger caliber, but it will also add weight, so no sense getting carried away on contour.
Agree ^^^^^
700 sporter contour finished at 22" is about perfect for a calling rig IMO.
