Drilled one of these up a few weeks ago. Pin is 4 1/2" to PAP located within the grip, with the CG in the thumb-positive quadrant. 1" extra hole near PAP on midline. Started with 2.6 TW.
This ball has an arc reaction (you'd expect that with this drilling) with outstanding pin carry. The break off the oil is subdued and very predictable providing there is enough volume. Not enough volume and like any other ball, it will want to go early. The Reactor pearl particle cover reads a medium/wet lane like a book. Smooth as. The Twin-V block provides ample flare (60° for me, but that's with 450 RPM) and strong continuation. I am surprised at how smoothly this ball rolls on some decent oil. Even on a medium condition, you can go straighter with your hand and get a nice read off the Pyro.
As an end note, I've got to say this ball carries more messengers than anything I've ever owned.