Some great points made for sure, for me I have found the sweet spot for a scoped rifle to be 7 3/4- 8 Lbs. or so.
All my rifles are model 70's either in good synthetic stocks or factory featherweights. I've had a handful of LWT Kimbers and I just don't shoot them as well, so I quit trying.
I still get up the mountains fine every year but if that slows a bit as I age, I'll know it's me, not my rifle.