I broke 5 times from the headstring with a closed bridge and my results were: 20.16, 20.52, 19.44, 19.80 and 19.34.
I broke 5 times a half a diamond back with a closed rail bridge and my results were: 20.79, 20.57, 21.77, 21.68 and 20.81.
Results will vary I'm sure from player to player but for...