Hi Dustin,
Welcome to the board.
How wise of you to try to find out something about this barrel before firing it.
First of all, the barrel is mounted backward on the carriage stand. It should point the other way.
It appears to have trunnions that are too small in diameter for the size of the barrel.
From the pictures, it is hard to tell if it has a vent hole. Does it?
Under no circumstances would I try to shoot it until I had further knowledge. It resembles no gun I have ever seen. I think the barrel as well as the carriage is a fantasy gun.
Others will chip in here. Watch and heed what they say. I could be wrong.
Zulu