Worried about new Shilen barrel

[poli]

The scratches threw me off since my only experience with AR platforms comes from my Sig 556, and that gun is smooth as silk. I was afraid that the bullets get scratched during the loading process and that might affect accuracy, but if it happens during extraction (and from what StoneTower and LR are saying it makes sense), then I'm not too concerned. Where I'm not clear though is why would the bullets get scratched when I'm loading them from magazine? If I drop the bullet into the chamber, then let the carrier group shut close and then extract, the bullet is not scratched.

I'll mark the bullets with color like StoneTower suggested and also take some pictures of my barrel extension and post them when I get home tonight.

I believe the tool Adam suggested works great - I just wish they had a magic one-size-fit-all for that price .