Savage small shank 6 Creedmoor X-Caliber barrel 24" # 4 contour .685, threaded 5/8x24, 7.5 twist, barrel was properly broken in and only has 45 rounds through it. I have only shot Berger 95gr Classic Hunter factory ammo and Hornady 87gr factory through it both shot under .75 @ 100, will include Northland barrel nut and lug. $325 shipped for barrel, nut & lug. Listed elsewhere