Some Suggestions

[Nuclearcricket]

I picked up a rifle in pretty much as new condition but was manufactured in or abouts 1973 according to the research I have done. The rifle was coated in cosmoline and I have been able to pretty much get most of it off and out of things. The bore however is an entirely different critter. Using a nylon brush I have scrubbed it with mineral solvents, eds red, Montana extreme copper remover, and just now some break free. I can shine a light up the bore and take a look and it still looks like an old dirt road with gravel on it. But it doesn't look pitted. The patches are coming out black to grey black and some have shown blue from copper.
Do any of you fine folks have any suggestions of anything else I might try to get out what ever is in there? I have been working on the bore for the past 4 days, it is better than when I started but not where I want it to be before send a round through it.
Thanks in advance
Sam