400,
I think the confusion about the 8x68 case is stemming from an article written by Dave Scovill in Handloader Magazine. Scovill claimed he had a case and reported its casehead measurement as .522". He also reported different shoulder and OAL measurements than Mike and I (Mike quoted what I quoted on 24Hr) above.

I'm not sure if Scovill "dry-labbed" his measurements, had a proto-type case that Hornady isn't using, the writer that passed along the info to me isn't correct or if Hornady is feeding confusing information to numerous people.

I honestly cannot see where Hornady would be using a .522" casehead, that just doesn't make sense to me. I strongly believe the writer that passed along the information to me that he got from Hornady is right, I've never known him not to be truthful or to not fully research his findings before opening his mouth. He has no reason for pomp, unlike Scovill who tried to take credit for everything under the sun, even the Barnes TSX design.