I was cleaning my ultra .243, started a patch down the barrel, it was a little tight but I thought it would go through ok.

As I got near the end IT STOPPED!
Finally after breaking the jag and cleaning rod, I got it out but it had a rough place you could feel when you passed a patch through.
I worked it over with JB's and finally it smoothed out.
I hope I didn't damage anything, and also I wonder if the rough place was there before I stuck the jag?
I didn't feel it before but thats exactly where the jag locked up (about 3-4 inches from the end).
Any ideas or advice?