If you take these barrels to a good barrel finisher, they would polish this out as much as possible, no need to weld anything, I brown barrels and blue in the uk,I will do them for you f.o.c if you cover postage. just to show you how nice these old guns can look. when I rebrown I dont always take off all the marks, there is no point having a gun with new looking barrels if the rest of the gun is only 6/10. I have seen keith kearchers work and it is excellent, he is especially good at the black and white finish.