It doesn't make any difference is a barrel is blued or bare stainless. If the barrel has a highly polished surface it will reflect light. I've never noticed any difference with deer's reactions between the two. I did use a synthetic sanding pad much like a scotchbrite pad to give my Ruger barrel a brushed look. I did that for my tastes not worrying about the deer. I had already hunted with it over nine years.