Dean Romig and Art Shaffer came up with the explanation for the burst of my Remington 3200 lower barrel. Stuck wad, inertial effect of the approaching load, extremely fast pressure rise behind the stuck wad. I can make this determination because I knew there was a stuck wad, forgot about it, and later loaded the gun and shot it. The GHE 20 in question seems to have had the same problem at the same place in the barrel. However, in the excitement of the injury to the shooter, a separated hull would have a similar result, and the two parts of the hull may not have been found.
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