I remember back when John Burns, owner of Grey Bull rifles, came here and he too wanted to keep the barrel maker confidential. Similar type thread as this one with lots of folks, including me, breaking his balls about the barrel maker. One day I just said, well we know that he is using one of the top flight barrel makers and there are no secret barrel makers out there that I'm aware of, so I stopped participating in the back and forth. So the bottom line is his rifles are very accurate and these new rifles come with an accuracy guarantee (I think it's sub MOA but I'm not sure).