Worried about new Shilen barrel

[StoneTower]

Those look like barrel extension scratches to me. I have an Armalite upper in 22-250 that did that when I got it. I was told to shoot it and that after a while it would go away. The ejector pushes the loaded round against the barrel extension when a loaded round is ejected. You can take a magic marker and color the bullet. Drop the cartridge in the chamber and push the bolt closed (upper removed from lower). Open the bolt slightly and then make sure the ejector does not push the bullet against the barrel extension. You will probably not see any scratches.