Jim Keenan, I disagree also.
Right now, I have a flintlock fowler being built by an expert muzzle loading gunsmith/builder. The fowler will have a Belgium Damascus that was/is brand new in the white, built 1800-1820 and bought, with complete factory contents, by an English gunsmith about ten years ago.
I plan to shoot it after testing with normal loads. BTW, it is 17 1/2 gauge.