I get about 60% bang flop with 12g slug. Most shots tend to be close (inside 40 yards). It seems that odd enough, I have larger deer fall on the spot where smaller deer tend to run.
In the last 9- 10 seasons:
1995: 1 140lb, 30 yards buck caught in front shoulder, dropped on spot
1999: 1, 150lb, 50 yards, buck caught in right ear, dropped on spot
1, 120lb, 15 feet, doe caught high on shoulder, dropped on spot
2001: 1, 105 lb, 25 yards, doe caught through shoulder, ran 40 yards
2004: 1, 180lb, 40 feet, buck caught far back running, shot again on the run through shoulder, dropped on spot
2005: 1, 130lbs, 25 feet, buck caught between brisket in front of shoulder, ran 75 yards
2006: 1, 120lb, 30 yards, doe caught behind shoulder, ran 50 yards.
2007: 1, 160lb, 25 feet, doe caught in shoulder, dropped on spot
1, 110lb, 40 feet, doe caught in shoulder, ran 50 yards