Jessica Rossi claimed a world record 99 out of 100 hits to win gold in the Olympic women's trap shooting at the Royal Artillery Barracks.
The Italian former world number one became the first shooter to hit a maximum 75 in qualifying.
And the 20-year-old police officer only missed out on an unbeatable world record by missing on her 92nd shot.
Zuzane Stefecekova of Slovakia took silver and Frenchwoman Delphine Reau the bronze after a shoot-off.
After Rossi's stunning performance in qualifying, the battle was for the other medals and it was Alessandro Perilli of San Marino who eventually missed out.
Rossi beat the final world record set by Stefecekova in 2006.
Spain's Fatima Galvez was favourite going into the competition but she had to settle for fifth spot.
Chinese world champion Liu Yingzi was knocked out in qualifying, finishing in 12th spot while British three-times Commonwealth champion