I don't believe you would find any factory loads that would approach 15,000 psi. A crazy reload maybe. Possibly one with a double charge? Could 20,000 psi do it? I don't know.
My question is if this shooter bulged these barrels due to hot loads. What condition are the other guns in he was shooting that day? Surely he didn't just have these two hot loads with him. This was at the southern SxS shoot so his loads would have probably been shot in other similar guns as well.
The other question I have is about how common is it to have base wads come loose and cause obstructions? I've been around a lot of guns and shooting & can honestly say I've never seen or experienced it. What are the odds of having two base wads come loose in two different barrels on the same gun & bulge both barrels at approximately the same place in each of them?
Personally I think there's more to this story. I want to believe Steve, it's his gun and he was the one that experienced it in real time. I'm thinking that it's a mystery that will never be solved without more concise information.
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