As mc said, it cost way more to make Damascus barrels. That, and American manufactures wanting people to think Damascus barrels were unsafe so they'd buy a new gun with steel barrels. Being unsafe was nothing more than a advertising ploy. Why is it the English never stopped proof testing them ?
This must just be a troll acting up again. I can't believe you're so incompetent that you can't find testing and reports that find Damascus barrels are safe.