There are more methods of treating and producing a finish on gun barrels than there seems to be stars in the sky. Though there was a man who sort to catalogue it all and in doing so produced a very fine book to try and make some sense out of it for us mortals, his name is R.H. Angier and his fine book is “Firearm Bluing And Browning” does not cost a great deal it is in print and it will help you understand why the original process of bluing was called browning amongst other things. If you have an interest or just want to know how firearm colour finishes where and are done or want to try it yourself this is the book for you.
