You'll need more than just browning. Get some ferric cloride from Radio Shack. I use a 1/2" dowel rod horizonialy in a vice, and after the barrels are cleaned and smooth, take some ferric cloride mixed about one part to three parts water and rub it on the barrels with a cotten dabber over and over for about three or four minutes [ don't touch the barrels with bare fingers- it'll leave bad spots - the barrels are on the dowel rod. You can use another piece of dowel in the other barrel to handle and move it around. This will etch the barrels and bring out the pattern. It will also bring out any pitted areas you have missed when sanding. Sometimes I etch, clean with hot water and a rag, and re-etch, maybe two or three times. After final hot water cleaning, then with the dowel rod and barrels vertical use the Laural Mountain browning- making only one pass, without overlapping down the barrels with about a 2 1/2" cloth. Depending on how humid it is the barrels should rust [ I take mine in a small bathroom and hang them after I've run the shower with the door closed to bring up the humitidy. After a couple of hours, they're rubbed under hot water with a rag, dried, and do it all over again until you get what you want- maybe four or five times, maybe 10 to 15 times. Every set of barrels are different. The Laural Mountain won't work right if you rub it, or overlap it like when you miss a spot. That's why I have them vertical and make one pass down one barrel, and another pass down the other barrel. it's time consuming and dirty work, but anyone can do it and it's fun when they turn out so pretty . Good luck- Paul