Great Britain shooters James Huckle and Jonathan Hammond both failed to make the final of the men's 50m rifle prone on Friday morning.
Huckle, 22, from Essex, could not emulate his room-mate Peter Wilson - who gripped the nation on Thursday afternoon when he won gold in the double trap - shooting 591 out of 600 in qualifying.
Hammond, 32, who was born in Aberdeen but now lives in West Virginia, fared a little better by shooting 593, but he was still two points short of making the shoot-off for Friday afternoon's final.
And they were a long way behind Sergei Martynov from Belarus, who equalled the word record with a perfect round of 600 to lead by one from Belgium's Lionel Cox going into the final.