I find I shoot an 8-9 pound rifle better than the lightweights at longish ranges. So that is what I tend to hunt with. I'm a bit over average for height and weight so maybe that helps. I try to stay in respective shape year round.

I'd say most would be well served to train harder both via weights and cardio vs obsessing about gear weights. Makes no difference to me either way. After hunting for 40 years I know what I like.