Get your favorite copper solvant and plug up the end of your barrel. Fill your barrel up to the chamber and let is soak for a day or so. After a day empty the barrel into a container so you can use it again if needed. Now scrub your barrel with a brush. Follow that up with patches.

Repeat if necessary.

If your barrel fouls up that badly then you might want to consider fire lapping the barrel to smooth it out a bit.

I just ordered the Outers Foul Out III from the Outdoor Superstore, 97.00 including shipping. I'll wait and give that thing a try. When using these harsh chemicals, do you guys normally remove the stock? Thanks for all your help, and I'll let you know how things turn out.

Well,,, I tried the Outers Foul Out III last night. I followed the instructions to the letter, and it didn't even touch the copper. I did it three times and never had anything attach to the rod, and the solution remained blue. Bigbulls, I guess I'll try your suggestion of soaking next. Can anyone say frustration?