Several have tried, with no success, to deter the OP from going ahead with his stunt. Facts about Damascus barrels, of any type and construction, have been ignored. Several have pointed out this could result in a gun dangerous to its user or anyone standing around. Nothing will be ‘proven.’
Anyone interested in a career in this field should be doing a lot of reading about metallurgy, gun construction, and history, instead of trying YouTube-inspired stunts. Go ahead, dissect barrels to understand them better, or practice tools and techniques on them to gain knowledge that will enrich your understanding of their construction and repair. Damascus-type barrels are a specialist subset with their own peculiarities and limits, and the better gunsmiths tread carefully with them. But destroying barrels for a laugh, falls well short of any kind of responsible gun handling and ownership in my book.
I would never entrust a fine double gun to a gunsmith that I felt lacked patience and common sense, or who did not have a profound understanding of their construction and materials.
But hey, what do I know, being a know-nothing, old-timer, fudd. Fair enough, I guess. But I’m also planning on keeping both eyes and all of my fingers as I continue to enjoy and hunt with old guns, and can only encourage relative newcomers to this great sport to be sensible, careful, and willing to learn/listen.