I hope to be hunting south of Carbondale CO, looks elevation goes from 7500ish to 10,000+ in a hurry in places. May have found some 200gr accubonds, if I do I will see what kind of accuracy I can ring out of them with my 30-06 and 300wm. My 30-06 is the twin to "Coyote Hunter" mine is wearing a burris, his may be also. Its a fairly light rig and has harvested many whitetail. I have a 300wm in the same gun and in a sendero, will see how they like them also. The sendero I have are not mountain gun material but if we are on horseback maybe. Thanks for all the input.