What is the diference between twist and plain twist
 

I have a ph #75946 it says twist on rib .pgca says there was twist and plain twist does anyone know wich one my gun would be and what is the diference.

There was Stub Twist too. Maybe Drew will explain it once again.

Once we get a definitive explanation of the three types of "Twist" Robin or John can put it on the FAQ page on the homepage.

Sure thing......

Gotta love Google. Here is an e-library holding of Lewis's American Sportsman that discusses the various metals used. It also discusses fraud and sham artists in the gun business. Read pages 34 and 35 from this link. The writing style is a treat to read as well. Of great interest to me (no prior knowledge) is the description of making "stub twist", the "stub" being used and rusted horse/mule shoe nails left over after the animal is re-shod. Those are then cleaned to silver shininess and blended with steel in a forge oven. It could take 40 to 50 pounds of "stubs" to make one barrel. Interesting example of early re-cycling.
Cheers,
Jack

In the absence of a reply from Drew, here is a link to his formiddable Damascus Knowledge blog.

http://sites.google.com/a/damascuskn...e.com/www/home

Yeah, seems like I asked that not long ago. ch

Sorry guys-wasn't paying attention. Here's the short version :)

Pattern Welded shotgun barrels can be classified into three general categories, all starting with strips of iron and steel, but with different manufacturing methodology:
Twist (thin ribbons of layered iron and steel which were NOT twisted before being wrapped around the mandril and hammer forged)
Crolle Damascus in many patterns (determined by how the iron and steel were 'piled' or layered in the billet and the twisting of the rods)
Laminated Steel (a higher ratio of steel to iron mixed together and ‘puddled’ before being formed into rods.)

LOTS of variants of Twist, but in general anything marked "Twist" is probably Plain Twist or Skelp. Stub Twist was felt to be a superior product and would be so labeled.

Long version here:
http://docs.google.com/Doc?id=dfg2hmx7_40dxk2scc7
http://docs.google.com/Doc?id=dfg2hmx7_69dxb227c6
http://docs.google.com/Doc?id=dfg2hmx7_162c3zhvkfx
http://docs.google.com/Doc?id=dfg2hmx7_282jmgkqxdp