RE: New Rifle
Well the o6' will certainly continue to handle those duties but extra cash anditch for something new is a great excuse. I agree with those who have said consider a 338 win mag, it will handle your request, diversify thecabinetand leave you room to hunt any animal on NA soil without question!
Scope is really personal I like my Leupold, like my Bushnell Elite's but I LOVE my Zeiss Conquests! Edge to edge clarity, great resolution, fast focus/constant eye relief, light gathering performance and tracks true.
I'd suggest the 3x9x40 variety ofwhatever goodquality scope your eye likes best.