I have had a bunch of ultralight and lightweight rifles built and I find a scoped rifle of
6 to 6.5 lbs with a 22" barrel seems to be the most practical from a backpackers perspective.
What I want is an all Stainless rifle as Sheep hunting in Northern BC can be a very wet miserable outing.
I have had built and donate an UltraLight Rifle each year to the Wild Sheep Society of BC and usually use a Kimber Montana 84M or 84L donor rifle and add a #1 Benchmark Contour barrel, this years(2019) rifle will be a 6.5-284 built on a Kimber Montana 84L.
I use a Leupold VX3i 4.5-14x40 CDS 30mm and Talley lightweights for my examples as this adds 1lb to your build and is a great compromise in a Lightweight/Longrange scope.
this is how I breakdown my goal weights when building UL rifles
Ultra Lightweight 5-6lbs scoped
Lightweight. 6-7.5lbs scoped
Standard. 7.5-9.5 scoped
here's a Cpl pictures of my own hunting rifle, Kimber Montana 84M 6.5-284 5Lbs with no scope and 6.5lbs with the Zeiss on it, this is my everyday sheep and deer hunting rifle
here's the 6.5 Creedmoor we donated last year at 6 Lbs scoped