How much of the extractor gap is below the right raceway when the bolt is closed, how much is exposed to the raceway?

The AR extractor, for sure, can't blow out due to the pin and the fact that most of that part will be below the raceway, supported by the action. Only gas escaping would be thru the small crack between the extractor and the milled slot.

I would like to hear about any that blew and what happened.

DF