My compact 223 weighs 7 lbs 1 oz scoped. My Kimber 308 5 lbs 15 oz scoped. I'm picking up a Ruger 308 tomorrow, going full size on it.
Not as light as the Kimber, and 3/4-1 lb is significant, but 7 lbs scoped for around $350 is pretty good. Especially as well as they shoot. If the 308 even matches the 223 I'll be thrilled.