I would look into a Browining A Bolt Stalker in a .270 WSM with a 140 Nosler Accubond at 3200 fps. Then top it with a Leupold VX3 4.5-14X 50mm Long Range with a Boone and Crocket Reticle and you will have a light weight, fast, flat, accurate big game rifle capable of nearly anything in North America at most ranges to 600 yards.