It's the most mysterious piece of kit in shooting and in this week's programme we're on a mission to discover the answer to the big question: how do they make riflescopes? We are the first camera crew to be allowed behind the scenes at the classiest of glass merchants, Zeiss in Germany, to see precisely what it takes. Then we go off to a range to try out the Zeiss scopes. But not just any range. This is a cinema, where you can shoot elephants, wild boar anything you like and with real rifles. What fun!

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