Well I took my new Armscorp receiver and my GI barrell to my smith to get it installed and have the headspace checked. Well he installed the barrell and she swallows the .308 field gauge big time. Maybe by .020 thousandths. He thinks it may be the barrell. The barrell shows some use but not much. I think it may be the receiver but I'm not sure. What do you guys think? Should I call Armscorp or talk to the guy I bought the barrell from. Thanks guys