British shooter Georgina Geikie has failed in her bid to reach the final of the 25m air pistol.
The 27-year-old from Devon finished 37th out of 39 competitors after Wednesday's qualification round, which consisted of precision shooting and rapid firing stages.
She scored 284 in the first stage and followed with 278, for a combined total of 562 out of 600 which left her 21 points outside the top eight, who will contest Wednesday afternoon's final.
Kim Jangmi of South Korea topped the qualifying table with a new Olympic record score of 591.
Geikie was disappointed with her performance, which came after she finished 47th in the 10m event on Sunday.
However, the part-time barmaid can take great satisfaction in competing as Britain's first pistol shooter in the Olympics since 1996.
"I'm a little bit disappointed to be honest," she said.
"I simply made some errors, it was pilot error.
"In the precision I think I was quite unlucky. Some of my shots were just outside the 10, and in qualification a 9.9 is not a 10, which is hard.
"Then I made quite a few errors in the rapid. But I've competed in the Olympics and had an amazing experience."