@Pennsyltucky Redneck,
The next morning Gilmore sent another note to Beauregard, signed this time.
Beauregard's reply was understandably hot, calling the shelling of a civilian city "barbaric", and "an act of desperation". The rebels tried responding with their big mortars, but the fuses were cut long. The shells buried themselves in the mud, exploding harmlessly.
The next night, the shelling resumed.
The first 6 went off alright, but some of the shells were detonating inside the tube. After the 6th shot, the gunner called out "Sir, I can't get the priming wire down"!
A quick examination showed that the cast iron barrel had shifted inside the wrought iron reinforcing band. In spite of this, they were still able to fire the cannon.
Lieutenant Sellmer decided to keep firing the gun, regardless of the fact that it was likely to burst any minute. With all the work involved getting the damn thing set up, they might as well make use of it as long as possible.
Sellmer told his men to take cover away from the gun, outside the sandbags that formed the walls of the battery. The gunner tied two lanyards together so he could stand outside as well.
Serving the gun and working in this manner, the crew, led by Lieutenant Sellmer ran another 12 shots. As the twelfth round was pushed down the tube Lieutenant Sellmer stepped outside the parapet, a little left of the muzzle. It was his intention to time the crew at loading, and he would be able to read his watch by the flash of the gun.
When the gunner pulled the lanyard, all hell broke loose.
As I said, Parrots were prone to split due to the brittleness of cast iron. Usually they'd burst just in front of the wrought iron reinforcing band near the trunnions. This one didn't. The barrel split inside of the band, at or near the vent where the priming tube was to be inserted.
The forward 3/4s of the tube launched forward, breaking loose from the carriage, landing on top of the sandbag parapet. The reinforcing band, with the breach of the barrel inside, was blown to the rear of the emplacement.
Sellmer suffered a burst eardrum and had his hair, eyebrows and facial hair badly singed. Three other crew members were injured as well.
The Swamp Angel's reign of terror was over.