4. I pretty much gave up on Dr. Jones when I read about how many broken clay targets he attributes to a single pellet strike. That contention alone told me that he needs to get away from his computer and spend some time picking up unbroken clay targets with a hole or holes. I don't know how many clay targets break as a result of a single pellet strike, but I do know I've found plenty that don't, some that don't break from 2 pellet strikes, and the occasional target that doesn't break from 3 hits.
Haven't read Jones, but totally agree about single ( and 2 or 3) pellet strikes failing to break targets. I, too, have picked up many unbroken with 3 pellet holes. That is precisely why I use nothing but two fixed chokes in competition, both .020". I strongly believe that I lose less targets because of an overly tight pattern than I would from light hits.
SRH