BudsGunShop.com - safe to shoot black powder shell in damascasbarrel

During the time period your gun was made there were no standards of which steel was manufactured and the quality of steel used in firearms ranged from amazing to dismal. I personally would value this an heirloom and not fire it, however a competent gun smith will, or should, be able to tell you whether or not it can be fired. Remember, this will be his or her opinion.

That is above my pay grade. I would take it to a gunsmith, let him check it out, and show him a screenshot of the shells. He or she is a professional and will give you the best advise.