First question, I am sure is obvious, but knowing NOTHING about the cannon shoots, reenacting, or the organization... I just don't know. Would the rev war cannon I am building be allowed in the NSSA events (providing the tube was constructed to their safety requirements?)
The outside of the barrel is full-size, but its a sub caliber bore, so I don't know if it would be considered "full size" or not. Its also not of the civil war timeframe.
What is the process to get it NSSA certified? I think it would be nice to have it certified if I ever decide to sell it, or reenact with it.