Well after a trip to the gunsmith today, we put a new crown on the barrel. Upon his inspection he figures they are marks from when the barrel was forged. After he cut the crown we could see that there were more marks just like it down the barrel farther.
The crown was rough anyways, & he said this may help. A trip to the range tomorrow will tell the tale.
Like I said the barrel doesn't foul bad, so if this smartens it up, I think we are set.
Here are a couple photos of the new crown.