Thread: Suppressor issue.

My mate has just got a .17HMR with a suppressor on it and I noticed that at some stage (looks like once only) a bullet has just clipped the side of the hole on exiting and has left a small mark/bruise on the metal. Knowing how critical the crown on the end of a barrel can be in regards the accuracy of the rifle we were wondering if this mark on the suppressor would affect accuracy in any way? The rifle does not seem to be clipping it now and we are assuming that the owner may have fired it at some stage with the suppressor not tightened correctly.
Any thoughts on this?