Robert: I suspect everything shown on the 'Damascus Barrels' PictureTrail is English or Belgian
http://www.picturetrail.com/gallery.fcgi?p=999&gid=16082038
and I only have one 'Faux damascus' pic (the last one)

Missed the Globe Trekker episode. Lots of stuff out there about damascus blade production (much less about gun barrels). The Moors controlled much of Iberia from 700-1200, and Grenada until 1492, and no doubt brought sword blade 'technology' with them. These folks claim the Flamenco came from Middle Eastern Dance http://www.middleeasterndance.net

https://sites.google.com/a/damascusknowledge.com/www/home