[EdZ]

Is there reasons to select 10-3-A Punch, in stead od 10-3-B Pitch when swinging. I have not been able to locate much info on this here but I am of the "impression" that most discussion on this forum is with 10-3-A even for swingers. Because of sequenced release the palm should remain up during #2 release and as the left wrist is uncocking the right forearm is allowing this without unbending the right wrist. At the point the LFFW swivels to vertical the right forearm still has a long way to go. I have a problem with running out of right arm unless I exagerate the down plane right shoulder to the point where it must be well past parallel to the plane line ie. estimateing 30 degrees past . because I can't move my right arm fast enough that it swings freely and retains #3 pp Now with the pitch stroke the elbow is in a position to move smoothly and allow the right forearm to fan through retaining #3pp feel.
Can you help me with a better understanding of the why? for right elbow/forearm/sholder anction as it relates to pitch vs. punch when swinging?

I don't know that I completely understand what you are asking, but pitch elbow is certainly more compatible for swingers. Part of running out of right arm may be coming from roundhousing, a collision with the right hip. Get that right elbow down in front of the right hip before the hips fire too much.

The punch position in your case may be the result of that collision.

A great Yoda drill that you may have seen in other posts, put a dowel in your front belt loops (across the front of your waist). You'll quickly see how you have to get that elbow down in front of the hip before the hips open to get into pitch position and have some right arm left for impact.