I sold my aiax so I have two Hawk Hill 6.5x47 barrels for sale. They will work with the ax or the at as far as I've been told. They were cut at the exact same time with the same reamer. They shoot great with the same load and are with 75 rounds of each other. One has 800 and one has 875 rounds on it. They are 7.7 twist, and 24" finished length. They have 5/8x24 muzzle threads. $350 each