Even if you do a rebarrel of a Savage it will still end up at close to 10 pounds. I have a Savage 10 with a 24 inch barrel .500 at the muzzel in 17 Remington, wood stock and a 4-12 Swift Scope, it weighs 9 1/2 pounds empty. Problem is the Swift and 22-250 both need the barrel length to use all that powder. I have a 5 1/2 pound Handi Rifle in 17 Remington FB, it is good for the 18 pound Coyotes in AZ but would probably just piss off their east coast cousins. You need to find a light weight long action, probably not an easy task. Can you get a 308 series magazine and bolt head for the 788 and just chamber your rifle in 22-250? As I recall the .222's were a 1 in14 twist, just what the 22-250 wants. Larry