I have an old Stevens Model 15-A. It was one of my father-in-laws (RIP) single shot .22’s that he used to teach his DeMolay boys to shoot with. It’s been in the back of the safe since 2013 when he passed. It had a very blotchy looking barrel and so I decided to try and fix it up a bit and maybe donate it to the local DeMolay club in perpetuity. I wanted to try a cold blue so after some research I chose Brownell’s Formula 44/40. After spending 2 days sanding on it I blued a little spot and I wasn’t very impressed. I sanded some more and then finished it by polishing with some #4 steel wool. That stuff really shined up that naked steel barrel and it did it quickly! I then prepared everything and did the whole barrel which only took about a minute. I rinsed and took a look and it was a bit blotchy looking again so I took some steel wool to the now-blued barrel and out comes a really decent looking blued barrel! I am THOROUGHLY impressed with how good that cold blue worked! It’s not a deep bluing but it is blue AND it’s fairly glossy to boot! Anyone else had a decent turnout with cold bluing? Anyone not pleased with it? What brand did you use, etc.?