This is a picture of the muzzle of a 22-250 (not a new rifle) I just got last Friday. I tried to get the rifling to show as best as possible. It does not show in the photo as well as I wanted it to, but it looks to me as if approx 3/8 inch back from the crown there is a noticeable mark which could be a tooling mark? The mark goes in a perfect circle around the inside of the barrel, I can't see anything deeper than that mark & the crown appears to be OK. So far the 2 trips to the range I have made have not been spectacular, but not terrible either. Here are a couple targets. I am sure the groups can tighten up with some more work as I haven't played that much yet. The barrel seems to clean nice & is not fouling all that bad. Basically I am wondering opinions on this ring vs accuracy being it is so close to the muzzle? My though is chopping it & recrowning it, it is 24" right now & a 1/2 would still leave me at 23.5"? What would cause a mark like that? Thanks.