Pablo Cagnasso had the following podium finishes at major championships: 1st in the 1951 Pan American Games 300 m high power rifle 3 positions, 1st in the 1951 Pan American Games 300 m high power rifle 3 positions team (with David Schiaffino, Juan Martino, Julio Nolasco, and the non-Olympian Pablo Pedotti), 1st in the 1951 Pan American Games army rifle 3 positions, 1st in the 1951 Pan American Games army rifle standing, 1st in the 1951 Pan American Games army rifle 3 positions team (with David Schiaffino, Antonio Ando, Abel Ortíz, and the non-Olympian Ramón Hagen), 1st in the 1951 Pan American Games army rifle standing team (with Ricardo Grimau, Antonio Ando, and the non-Olympians Claudio Cabrera and Ramón Hagen), 2nd in the 1951 Pan American Games 50 m pistol team (with Alberto Martijena, Oscar Bidegain, and the non-Olympians Ángel Manelli and Antonio Cannavo), 2nd in the 1959 Pan American Games 300 m high power rifle 3 positions team (with Jorge di Giandoménico, Pedro Armella, and the non-Olympian Antonio Ando, Jr.).