As well as doping testing, athletes have their kit scrutinised too. Want to know how they stop shooting cheats? We go behind the scenes at the Deodoro stadium, Rio de Janeiro, venue for the 2016 Olympic shooting events, to meet the man who is doing just that: Wilhelm Grill.

For more about Laporte clay pigeon traps, go to www.claypigeoncompany.co.uk

For our clayshooting show, Claysports, go to www.fieldsportschannel.tv/channel/claysportstv/

This film was first shown in Fieldsports Britain episode 340. To watch the whole show go to Fcha.nl/fieldsportsbritain340

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