[Jeff]

AC

You wrote-: "Now at startdown;
- to do a 4 barrel, start by actively doing a shoulder turn and thereby moving pp4 and then 1,2,3
Here the right shoulder is active

- to do a 3 barrel, start by moving pp1 and then 2,3
Here the right shoulder is passive and the acc4 is zeroed out, is does nothing but allows other things to happen."

I have a great problem with your triple barrel swing action description. You are implying that one can start a hitting action by immediately releasing PA#1 without moving the power package assembly closer to the ball by means of an active right shoulder movement. That's impossible because one would run out of right arm and the hands could not reach impact fix alignment.

An analogy - imagine a boxer trying to knock-out his opponent with a right arm straightening action - a straight line right arm thrust aimed directly at his opponent's chin. There is one potential problem - if the distance between his right shoulder and the opponent's chin at the time of releasing his PA#1 is greater than the length of the straightened right arm, then his fist will not reach his opponent's chin. He needs to thrust his right shoulder forward while he releases PA#1 so that he can execute the knock-out blow.

I think that the right shoulder always has to actively move downplane before PA#1 is released - whether it is a triple barrel or four barrel hitting action.

Jeff.