Haywire:
Speer didn't give specifics, for all we know the Springfield owner bought his 30-06 dies at an estate sale after some nutty wildcatter died. (nutty because I can't think of a logical reason to chamber a gun for a .035" shortened 30-06)
If he loaned it and it got modified, the jerk would probably claim it was that way when he borrowed it. A friend of mine recently got a $300 MAC ball joint press returned all bent out of shape and that's what the borrower told him.
I should probably get a 1/8" stamp set and restamp any barrels I rechamber, even the AI barrels.
I've heard gunsmiths who recommend a chamber cast of any used gun, but I would not have thought I needed to take a chamber cast of a used sizing die.