Stevie,
Try this link below. No doubt, a professional hot blue can't be beat, but I just bought an old Marlin 39a from a shop that looked like somebody had left it behind the seat of their truck and forgot about it. I used this technique to reblue, and whenmy father in law saw it, he gave this old Revelation Model 300 .410 pump to me to do for him. When I am done with the wood work on the Marlin, I will try to get some pictures of it also.
This .410 is 5 rounds of blueing as described in this link with the Birchwood Casey Super Blue. I found there is no need to rush from bluing to the cold water because you can easily blend the blueby lightpolishing using .0000 steel wool.
Of course, you have to completely disassemble the gun, and the real key is the degreasing with gun scrubber. Make sure all oil, rust, and old blueare gone. Again, don't be alarmed at the different shades of blue, because the steel wool blends it perfectly. I went 5 rounds because I wanted it as dark as possible. If you goof it up, it is no biggie because you can start over. If you still don't get it, then save up for a professional job.
http://www.surplusrifle.com/carbinenagant/reblue/index.asp