Cam wiped out, what the hell did I do wrong?!?!?

I had good oil pressure, a bit on the high side, actually, and there was lots of oil coming up through the pushrods, so the lifters must have been getting oil. The holes were lined up on the cam bearings. This is why I can't figure it out, especially the cam being almost completely seized. Can't say the cam lobes are a huge surprise because of the steep ramp angles on them ,but lots of people are running them with no problems.