Foul on shot causes travel.

[Mark T. DeNucci, Sr.]

Originally Posted by just another ref

I'd have to see this play, but I don't picture a shooting motion that starts before the first landing in this case.

just another ref:

Look at it this way: What is the first thing, that a player who is dribbling the ball, have to do to shoot the ball? Stop his dribble. The stopping of the dribble is the start of the act of shooting.

Going back to my OP. While the illegal contact can occur very early in the "potential" act of shooting. Go ahead and sound your whistle when the contact occurs, but see the whole play. Why? If at any time after the illegal contact A1 passes the ball instead of releasing the ball for a field attempt the foul is a common foul and not a foul against a player in the act of shooting.

MTD, Sr.