I don't mean to throw a fork in you plans but consider that all my rifles except one is stainless. I've hunted game in all kinds of scenarios and not once have I spooked game. Perhaps I spooked game I didn't know where there but to my knowledge none.

I've also read that gloss black barrels reflect more light than a stainless.

If you want to coat it or bead blast it, knock yourself out but I don't think you need to.

Tom