Montana 308 for about $1100.
P.
the 7mm-08 is a great deal, but if you are looking for that light weight you can get there with a montana pretty easily and have a greater choice in calibers---
For reference:
my Adirondack in 308 with a muzzle break (came with it when I bought it used) and 13 oz. scope in talleys weighs 6# even.
my Montana in .338 federal cut down to 17" with a 16 oz. scope in talleys is 6# 6oz.
I've got them the way I want them but if you swapped their scopes and they would be the virtually the same...
If I were going to build my own feather weight in any random caliber I would do the following:
chris84 is selling titanium bolt knobs for the 84M, that will save you 2-ish ounces.
You can calculate the weight of your barrel/ how much you can lose by cutting it here:
http://pac-nor.com/cgi-bin/bweight.cgi my .338 barrel was closest in profile to a #1
if you go with a fixed 6x36 or a lightweight 2-7 Leupold you can get a sub 10 ounce scope and probably get a 84M montana under 6lbs scoped without much fuss for about 1200 before optics.
lets start with a .257 Roberts Montana for $1100 and look at it by the numbers:
starting 5 lbs, 2 oz.
------cut to 18" takes off .3lbs= 4.8 oz lets round up to 5 when you take into account the recessed target crown metal removal. should cost $125 tops, if you cant find someone to do it, buy a T-handle facing kit from brownells and use a hacksaw and do it yourself for $100
4 lbs. 14 oz.
------swap for titanium bolt handle -2 oz $55
4 lbs. 12 oz.