If that rifle will strictly be your caribou/open country rifle a 6x fixed power scope would be fine. However, if you intend on using the same rifle for hunting moose, bear, or anything else that may live in brushy areas where shots may be well under 100 yds you may want to re-think your choice of a 6X fixed scope. I would NOT want a 6X when facing a grizz at 25 yds or making a quick of hand shot at a moose in the bush at the same distance. I have one big game hunting rifle, a 300 WSM with a Leupold 2x7x33, and the scope works well from 25 to 500 yds. Good luck.