That brings up the question: What can you not do with a good 30-06 loaded up with good 180's????
A 30-06 will work. but, it has to be light enough to pack up a lot of mountains. The 180 is a fine bullet, but I wouldn't limit myself to 1 bullet when plenty are available. 130tsx, 155 skinner, 168tsx, 180 whatever, etc.