260 barrel

+1 on JP!! They make one hell of an accurate AR barrel.

They have their 22", medium contour, 1:8 twist .260 tubes in stock now for $599 WITH a matching/headspaced enhanced bolt...see here:

JP Rifles

It should be a good deal lighter than your current Lilja...those are just HEAVY pigs all around.
 
I am looking at a JP barrel in 6.5 CM and they still show 22" 260 barrels and bolts in stock. I also have 3 Lilja barrels. I just bought 2 308 barrels in the AR10740 contour 20" and they are not very heavy (2.56#). Shoots well also. Their 24" heavy barrel is 4.25#.

I would consider another of those except they don't offer the Creedmoor. But not to say I wouldn't buy a JP either.