Brent, I can only tell you what I do.
I was bluing a reciver for M42 Winchester
The customer did the prep job that included
very high polish.
It took me more than a week to get the blueing done, and I was not to happy with the results.
But He did like it.
The next one I did I used a 360 grit Scotch pad, and went over His polished job and this time
in 3 days i had the finish that He told me he almost wet his pants over it.
Casey