Rocketman
The observation of the number of 1 pellet strikes surviving was really just in support of the anacdotal claim that you really need 3 - 4 strikes to be fairly sure of a kill - which the observation appears to support. We have all seen clays just break in half, probably as a rsult of a 1 pellet strike - and very grateful we are for them - but we have also seen puffs of dust come off clays - also probably as a result of 1 pellet strikes.
I will still advise on shot size and choke choice that will give a 3 - 4 pellet strike on a particulare target, with sufficient energy to cause significant damage and hopefully a very good chance of a 'kill'.
You may have missed the point slightly on the three pellet strikes. I think we can safely assume that there were at least - and probably many more - 3 pellet strikes than one pellet strikes - and only 1 survived!
Maths was never my best subject!
All I can say from this very limited and very unscientific observation is that there were no 4 pellet strike survivors but a significant number of 1 pellet survivors so it would be sensible to direct any energy towards ensuring 3+ pellet strikes by whatever means.
I have actualy seen clays broken by the wad! now what is the probability of that - they still go down as a 'kill'!!!
John