When I decided to build a lightweight I knew I wanted a commonly available caliber in case it went on an out of state hunt and my ammo didn't make it for any reason. Since 7RM can be had at pretty much any backwater bait shop in the world I went that route.
Build looks like this:
Savage Long action. T&T by SSS
Benchmark Barrel (Very Impressed)
McMillan Hunters Edge Ultralight Stock
DNZ products one piece base/rings
Nikon Monarch 3-12x40mm w/ Nikons BDC reticle.
Finish is a heavy bead blast to knock the shine off and be easy to maintain.
The whole outfit weighs in at 8lbs on the nose.
I load 140gr Accubonds at a very comfortable 3000fps, they match up beautifully with the reticle at that speed and shoot half minute with almost boring regularity. I built this gun with under 500 yard hunting in mind and for that it is outstanding. For long range stuff I use a different toy.