Here's a question about the process Dennis. When you brown, do you produce a very smooth brown finish?
I like browning, but my browning is generally a somewhat rough texture, produced by letting the rusting to go on longer than needed and applying a lot of coats and restrained carding using a worn soft brass brush. Not everyone would like the finish that I produce, but it makes going beyond 220 grit polish a waste of effort. You could do a test piece to see the results if this sounds interesting.