Does anyone have a CZ-550 in 416 Rigby handy that they can give me some measurements on? I'm basically looking for the barrel contour, but I'd like to know what the specific measurements are. I want to know how big of a barrel I can fit in the factory barrel channel on a 416 Rigby.

Mine measures 1.220 at Reciever ring .945 at front of rear sight boss .825 11" in front of reciever ring .720 at 20".
Hope this helps.

That certainly helps. Thanks!