Has an AFL game ever ended 76-43?
It has. 76-43 has been a AFL final 3 times in 16,622 games. The first was Carlton beat Geelong on July 13, 1935; the latest was Richmond beat Port Adelaide on May 24, 2015.
That makes 76-43 the 1534th most common final score out of 6,607 that have ever occurred in AFL. One point away, 77-43 has happened 2 times and 76-44 has happened 3 times. At one point the score disappeared for 51 years, between 1964 and 2015.