I'm in the midst of 7saum build. The rifle will be used for targets past 1000 and big game hunting as far out as I feel comfortable. Since I do want to hunt with the rifle weight is a consideration. I have a Montana so I'm not looking for a backpack rifle or anything like that, but I would like to keep the weight to something manageable if possible. What effect, if any, do you feel barrel contour/o.d. has in accuracy? What is the smallest contour/weight you would feel comfortable with in this situation?