When it comes to hunting rifles in the mountains, I am a Goldilocks kind of a guy. This one is toooo heavy, this one is tooo light. This one is juuust right!
I don't like heavy or light rifles. I have always used standard rifles that are middle of the road in weight when I scope them.
Really light guns tend to wobble too much as I catch my breath when I am trying to aim at an elk. And too heavy guns are just too heavy. Normal guns are OK to carry and have the right weight to be stable when I aim.
You probably don't want to even think about shooting beyond 400 yards out there, and pretty much any gun is capable of doing that if you are. Don't sweat it. Just find a gun that "feels good" in your hands that you won't mind carrying and you will be just fine.