Shooting a jezail rifle

[kahnjar1]

Originally Posted by SchildaBrit

Whatever it is, it's resistant to everything that I dare to put down the barrel!

I think the barrel might be some kind of damast, which is why I would not like to use aggressive chemicals.

Photos now inserted. Unfortunately the software limitation means that I cannot post the picture of the barrel with adequate resolution to show up the wavy patterning. Just use your imagination!

Are you sure its not just old hardened black powder residue?? Try scrubbing with boiling water. We always used that to remove (most of) black powder residue. Then used black powder solvent to finish off.
Stu