If you will have a look at Jones's research, you will be able to easily identify many single pellet breaks. A target that has only two or three pieces is almost for sure a single pellet break. The pellet strike starts a fracture line crack (clays are very strong, but brittle). The fracture quickly crosses the target and the two or three pieces separate.
You can pick up all the unscorable targets with however many pellet strikes you care to and you still will never know how many singularly struck targets were scored. (No, not ever singlularly struck target breaks; Jones is not saying that. Yes, two strikes are more likely to a break target than is one.) Therefore, you have no idea as to the probability of a single strike resulting in a scored target. Anybody else out there able to present research data on the subject of pellet strikes vs probability of a scorable traget? BTW, the other side of number of pellet strikes is aiming error; anyone have any research on probability of scorable target vs aiming error? Jones started his single pellet strike research because his patterning results showed a requirement for aiming error so small that it seemed unlikely.
DDA
