Ken: I've only tested 3 Iron Crolle, Twist, Damascus-Twist, and a single 4 Iron Crolle segment. Without giving away all the good stuff wink the tensile strength was remarkably consistent at about 54,000 psi. That is just more than 1/2 the tensile strength of lowly Hunter Arms Armor steel.

BTW: It is my opinion that Etoile, "Washington", and Chain patterns use similar lopins/methodology. Check out the Remington 1894 barrels at the beginning here
http://www.picturetrail.com/sfx/album/view/18015717

and this very odd Smith barrel



I understand Bro. Steve is working on a Chain pattern barrel