Chiara Leone rallied late on to grab victory in the 50 metre rifle three positions women’s final on Friday for Switzerland’s first gold of the Paris Olympics. The European champion, in her first Games, mastered shooting while kneeling, prone and standing to set an Olympic record 464.4 points. She follows in the footsteps of fellow Swiss Nina Christen, who won the title three years ago in Tokyo as the first woman from her country to strike Olympic shooting gold. American Sagen Maddalena had to settle for silver at the French national shooting centre in Chateauroux and long-time leader Zhang Qio…