Thanks for the replies so far will be going to see it and talk to the owner tomorrow night.
Rob, its the rifle I had a quick check on the plinking range when Cam had finished in the woods. Hit 1 in the wooded section but got 50% of those on the open range section.
Steve, I may take you up on that offer. I was thinking that it was more like a loose barrel but not sure if there are some screws at the breech end that may be loose.