That would appear to be a Partner press, with the bolt up against the bench like that, it could stress the web area like that over time. Nothing to do with how dies are set up. Essentially he was putting all the leverage against that one bolt and flexing the base. Would have thought, it might have happened closer to the bolt, at the end of the web.
Of course it depends on how the center rod of the die is adjusted.
If it is turned in too far, the case being sized can't go all the way into the die, because it hits the web of the cartridge case, at the flash hole and extra pressure could be applied to the handle, not knowing it could not go further.




























I thought I read somewhere that rcbs accepted photographic evidence of destruction of a bad component/item before replacement rather than having the customer ship back a defective device. I believe this was a Furnace which probably doesn't have a lot of useable parts. 






















