You are correct Daryl: From Dr Gaddy- "The top barrels in the famous Birmingham Proof House destructive tests in 1891 were three-iron British Laminated Steel barrels. Laminated Steel barrels were made the same way as Damascus barrels but had higher (usually 70% ) high quality steel in the composite." Unfortunately, his damascus barrel board did not include an example of 'British Laminated.' I already added that pic to the PictureTrail and will correct the caption and thanks!

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