One of the 264 imp off the 308 case is a very good choice that is extremely accurate. With the 140 berger at .640 bc it can shoot a long way accurately. To shoot a long way it is good to seat long bc bullets out toward the rifling. Some short actions prevent this unless you use them as single shots. The 6.5-284 is also a very good one. These are cheaper to shoot than a magnum but you will use a lot of clicks when you stretch the range out so get a quality scope known for repeatable clicks. Right now I am working with some short mags that are very impressive. The 264-300 wsm
with the 140 bergers is really performing well at long range and the gun scoped out weighs 7 pounds. Nice mountain rifle. I just got off the range with it and a 300 wsm shooting 150 barnes ttsx bullets. I was shooting sub 2" groups at the 400 yard target with both.