7mm RM with a 1:8 twist if you don't mind building one. The new 180 gr Hornady ELD bullets with BC's of .796 are on my list to try. Should be great for long shots in windy conditions.
My old Ruger Boat Paddle 7RM has taken many Elk and one Moose. Sheep is not feasible for me to draw so I'll not comment about that.
I'll second BSA about the .338 WM, especially for Elk. I have one of those too. Ruger 77 MkII of course.
