I recently came across these images of the Official Ryder Cup Gun. The O/U by Holloway and Noughton was a three month project for hand engraver Phill Coggan. Simply amazing work, especially on the portrait there and the gilding.
Thought I won't be shooting anything like that smart, just looking at it makes me excited about this season really getting going.
...and no, I don't know either why the Ryder Cup (golf tournament) need an official gun but having seen it I don't really see a reason other than 'just because' is necessary.