Re: Contour vs. Weight
I built a .30-06 AI 3 years ago and it has a 26" #6 Krieger Heavy Bull sporter on it it weighs 4.5lbs. The action is a Remington 700. The Stock is a Faigen Laminate (from the 90's) and The whole rig with the Leupold MK-4, sling, and bipod it. Weighs in around 11 lbs 15oz.
Mine is obviously not a light weight rig. But as .280 Said, a lighter barrel might be the answer.
Mine was built specifically for mid to longer ranges (300-700yds) and built specifically to shoot 165-180g bullets. I needed a heavier barrel to accomplish this.