How are sheet composite blades of folded layers of iron and steel equivalent to composite tubes of layered, twisted and rolled tubes of iron and steel wound about a mandrel? While there are similarities the process of fabrication is very different.

I assume that you are referencing shotgun barrels made of Damascus vs. modern steel, and agree that modern steel formulas are far superior in both composition and processes used. Damascus nowadays is constructed for it's beauty , not for its functionality in modern steel work .What I was referring to was when it was first created, centuries ago when swords were made of either soft metal which would not hold an edge well , and hard steel which held a great edge but was extremely brittle. The innovation came with the discovery of the Bloomery or Reen furnace. This enabled early smiths to forge the 2 together and create a sword with the best of both, a somewhat soft blade with a hardened edge for sharpness, to put this in perspective , this was the second step up from the bronze age.

Just for clarity, please note the OP asked about a shotgun barrel Damascus pattern.

Rosa Damascena

http://pic20.picturetrail.com:80/VOL.../363848040.jpg

3 Iron "Ferlacher Rosen" Damascus

http://pic20.picturetrail.com:80/VOL.../379139720.jpg

Parker 'Rose Pattern' Bernard II

http://pic20.picturetrail.com:80/VOL.../361027812.jpg

"Rosebud" Damascus blade - an entirely different production process involving primarily (the very short version) FOLDING, hammer welding and grinding the laminate; not hammer welding the lopin then twisting and helically welding

http://pic20.picturetrail.com:80/VOL.../345892786.jpg

Interesting reading regarding BLADE history
https://docs.google.com/document/d/1...nI4/edit?pli=1

BARREL history
https://docs.google.com/document/d/1.../preview?pli=1

Thanks Dr. Drew!

And of course, the Rosa Turbina. :bigbye:




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Harold
That second picture, the pig sticker, is one beautiful piece of work. Yours?
David

I wish it was mine, but it is not. That is the style of blade that I like the best. I do however, hope to produce one similar in the near future.

Those are gorgeous barrels, the 2nd one looks like the banded technique where they grind across the grain so to speak , the last looks like some of the examples of the nail pattern that I have seen:)

Rose Pattern
 

These are Bernard barrels what pattern are they? Gary

I make damascus knives and when I drill and then hammer flat a layered blade it's called rain drop, and everyone I know making them calls them the same. Not to say some in other parts of the country call them something else. The other common pattern we're used to seeing on barrels called a 2, 3, 4 iron is called a star pattern when on a knife. I'm not saying there isn't one, but I've never seen a rain drop pattern on a gun barrel. If there is I'd like to see it.

Late to the party. Gary: the various makers of that BARREL pattern called it "Bernard II"; some added "Rose Pattern"

Manufacture Liegeoise D'Armes A Feu Damascus Salesman's Samples from the collection of Ken Waite Jr. and Ken Waite III

http://pic20.picturetrail.com:80/VOL.../338414106.jpg

https://docs.google.com/document/d/1...P3FP0fXb0/edit

And back to the OP's question:

Rose Brothers of Hales Owen, 1860-1892 was an important manufacturer of gun barrels. The company held several British patents related to barrel and tube making. One was granted for making twist barrels by machinery, British patent #13299 of 24th Oct 1850. Barrels made by Rose Brothers are often marked; "Roses Patent" or just "Roses."

An advertisement of 1868 –
“ROSE BROTHERS (by her Majesty’s Royal Letters Patent) Hales Owen Mills and Forge, near Birmingham, Manufacturers of Chassepot Rifles and Every Description of Military Gun Barrels, from either steel or iron, Manufacturers of Drilled Cast Steel Moulds, for rolling Chassepot Rifle Barrels, or any other description of Military Barrels. Also, Manufacturers of every description of Sporting Gun Barrels, Either Breech-Loaders, or Muzzle-Loaders, made from Steel or any description of Fancy Twist Iron. Contracts made with Foreign Governments for Chassepot Rifle Barrels, either in the unfinished or finished state, likewise for Cast Steel Drilled Moulds. N.B. Retail Warehouse 25, Newton Street, Birmingham.”"