Banzaibird,

I am also interested in colorado's processes. I am also interested in "from scrath" double bbl building, and finally, I am interested in the damascus bbl'd shotgun you are considering converting, as I have one I am considering for conversion too.

Since we're in the "askin'" mode, what have you heard regarding the use of damascus bbls for refit to rifle bbls? What I've heard is that the rifled liners, not the shotgun bbls, actually contain all of the pressure generated by the rifle cartridge anyway, so the fact that the original bbls might be damascus is immaterial. In my case, I'm only interested in BP loads or relatively low-pressure smokeless loads. By the same token, I would be buiding for .50 caliber cartridges, so the liners, even in a 12 gauge would be thinner than for something in .375, .40 or even .45 caliber.

Paul