Indians For Guns

I have a Fusil Robust 12guage double barrel shotgun (made in France).Its mechanism body ,the trigerguard,the triger has bluish patches or tinges on the surface which is a typical finish of robust shotguns which is not bluing . it is some different kind of finish .The only part of my gun which has bluing is the barrel . can anyone tell me what the finish or finishing methord called ?

Welcome to IFG.

Does the colour pattern look like this?

http://www.gunsinternational.com/images ... 29-1-l.jpg

If yes, it's called "Case colouring". For more info,please go through these links.

http://en.wikipedia.org/wiki/Case_hardening

If you could post a few photographs of your gun,that will be more helpful. Hang around and post often.

Best-
Vikram

Thank u very much for info you provided.It was helpful ,I do bluing of guns myself .I am planning to blue my shotgun barrel ,after I finish the work I will post you photos .

vikrant it is called bone charcol case hardning and there are 2-3 people in jammu who can do this type of color case hardning , Hot caustic bluing is good for shotgun you can try that but with some experienced hand. It gives mirror type finnish .

Hot caustic bluing on the barrel of a double

winnie_the_pooh wrote:Hot caustic bluing on the barrel of a double

...well...look at the bright side...you'll have two SBBLs for the price of one DBBL...
...and French made too!