finally got the barrel on, headspaced and had to modify the bolt baffle since it previously was setup for .223. Used the pacific tool and gauge bolt head which is a very nicely machined piece. Shilen Select match barrel from Northland Shooters Supply (Jim is a great guy and is very helpful) along with his recoil lug and barrel nut. I think it came together quite nicely. Special thanks to Hooker who sent me the magazine and follower I needed to complete the project.