Getting ready to brown my smooth bore's barrel. I bought a bottle of Laurel Mountain Forge cold brown solution. Last build I went with BC plum brown. But since this new gun has two soldered barrel tennons, instead of the staked variety, I cannot heat the metal for fear of the tennons coming loose. The front sight is also soldered in place. I had to go with the cold brown. I can't find anywhere that mentions whether this stuff will hurt the solder or not. I'm thinking no, but am not sure. Anyone brown a barrel with soldered areas, and what were your results. Thanks in advance.