K'norr Escort deals 29409 (812) Antiproton Damage to you with Dual Antiproton Cannons.
I think the hull of my carrier must have spontaneously converted to taffy or something. This was running 'Afterlife' at level 42. It wasn't just one hit either, there were two other hits of about 11000 and 15000 from the dual cannons and the turret respectively. At the same time I was taking normal damage hits from some FerJai Frigates, so it wasn't some weird -resist thing on me. I have no idea what it was, frankly...
On the plus side,
Your Feedback Pulse Applied gives 11099 (5404) FeedbackPulse to K'Norr Escort.
Not that that helps much after I exploded.
I filed this as a bug report, cant find the ticket # tho.