Ryan Cockbill won Gold in R4 at the IPC Shooting World Cup but controversy over Richard Davies meant GB couldn't add to the seven direct slots won thus far for Rio.
Davies, who had missed the World Cups in Croatia and Australia through injury, was second in quliafication but a protest from Slovenia about an accidental discharge led to that shot being chalked off. Davies slipped to 22nd place and his challenge was over.
Cockbill, who earned an R5 slot in Croatia, did his best to make amends and won the final comfortably, nearly two points ahead of Sweden's Philip Jonsson.
In the R8 final GB had three representatives but could not secure a direct slot for Rio as Karen Butler and Lesley Baldwin finished 7th and 8th respectively. Lorraine Lambert was the best placed on the GB athletes just outside the medals in 4th in an event won by Australia's Natalie Smith.