Most of your recoil is going to be helped with a good stock, stockade or manners are good stocks that most folks can afford, for a barrel I don't think a heavy contour will make you happy carrying around the mountains! I would go with a 26" tube to help a touch with velocity and the 162 A Max is an awesome bullet as the 180 bergers just have whomever is chamfering you rifle knows what bullet you'll be shooting makes a big difference. I'd lean more towards a medium heavy over heavy, I went light on a 284 Win and it was great for 3 shots then sorta started to scatter things. Look on some of the barrel mfg sites to get an idea on weights and figure out how heavy of a rifle you want to lug around.
BJ and Steve out there at Gene Sears can give you a wealth of info just take something to write with as it can be a little overwealming! I run ken Farrell +20 MOA bases and warne rings and have been more than happy! trying out a vortex HS-T scope now and it's making me smile. May take a trip over to long range hunting website as there is lots of reading there to be had for the questions your asking. Later,
Kirk