.308-- marks on bullet???

[GOING FOR 2000]

The line between the two rifling engravements is what I am talking about. It is in all 6 grove points. Any ideas?

http://i894.photobucket.com/albums/ac148/GOINGFOR2500/rifling/IMG_0497.jpg

 

[Stewart]

Re: .308-- marks on bullet???

It is where the bullet has upset and is touching the bottom of the groove between the lands.