So i have a Glock 17 (Gen 3) its pretty new, only shot about 220 rounds through it, and i was shooting some cheap steel cased ammo yesterday, and i had a bad round and most of the powder didn't go off so the bullet got stuck in the barrel so i got home and got a little rod and a hammer and slowly tapped it out and i noticed it had these small cuts/scratches and I'm not sure if they were here before or not? I'm not talking about the rifling by the way. Its like 12 different cuts they go around the barrel in like a circle, I uploaded some pictures, can somebody tell me if this is normal? If it's wear or damage? Here are the pictures: http://imgur.com/a/KeoZ3