If you want to locate a .416 Rigby, I would suggest you call Kirby over at Vintage Doubles in Wentachee. His website is www.vintagedoubles.com His contact info is on the website. He normally has a very large selection of fine modern and antique shotguns and rifles. Kirby is a gentleman and very knowledgable about all manner of guns. If he were to have a .416, you might be able to work something out where you could go over and fire the gun....just an idea.