"Doble" hit

[umpjim]

Around this neck of the woods that's what it is called and batter is out. Batter bunts or swings and ball goes down and pops up and hits the bat while the batter is in the box. OBR strict rule reading says he's out. FED says accidental contact is foul ball. My NCAA rule book reads like OBR but a video they put out says it's foul by rule. Having attended a clinic and gleaned wisdom from you all I have a foul ball.
I have the FED citation but does anybody have some officially written explanations of this rule other than the verbal stuff we are told in OBR or NCAA?
My fairly old PBUC was of no help. Also of no help was one or maybe two calls by MLB umpires in the postseason which actually called the batter out contrary to what I've been taught but correct by the strict reading of the rule.

PS: anybody got a link to the MLB calls that I'm talking about?