Thanks for all the info so far. I guess I was using the wrong term, where I really meant case failure-slash-kaboom in a straight walled pistol cartridge. I thought case head separation was a general term for when a cartridge ruptures at the back, such as happens in a kB. So now I'm learned.
So far in my googling, I've only found one pistol kB that included load data. It was a .40 reload using once-fired brass and he was well within max manufacturer recommended charge weight and OAL. But he was using recalled FC headstamp brass, which was the main culprit. His event was relatively mild. He only noticed the mag shooting out and a stinging in his trigger finger, and he ended up replacing some cheap parts. In contrast, it was easy to find stories where a double charge or even triple charge was suspected, where load info was considered irrelevant.
The other thing I was wondering is this: I've seen pictures of blown up Glock barrels, with suggestive commentary deriding the lack of case support. Just to clarify, I imagine that any cartridge that will blow up a barrel must be severely overcharged or barrel obstructed. Am I correct? A fatigue case failure of a normal pressure round cannot make a barrel blow up, can it? I'd imagine the case failure would put pressure in OTHER parts of the gun, and the pressure on the barrel would be LESS than normal, if anything. So blown up Glock barrels should be suggestive of bore obstruction or overcharge, neither of which have anything to do with case support. Correct or no? FTR, my gen 3 Glock has plenty of case support. Some of my scrounged brass starts out bulged, but by the time it ejects from my Glock, it looks perfect.
Peter_S, thanks for the tip for my thrower. After tightening the screw, it only leaks 5-6 flakes per throw with the W AutoComp, and the movement no longer gets so crunchy. I think I will give it a second chance and might even try giving it a full cleaning.