Re: Copper, and more copper!!!!
Wait... Why are you trying to clean out all of the copper? Leave it in there! First, removing all of the copper exposes the rifling to faster wear. Second, the copper fills in some of the imperfections and smooths the bore. This is not some crazy rankings from a novice. Talk to Long-Range Tactical shooters and Snipers and they'll back me up. Don't be so quick to make that bore squeaky-clean after each range session. Let the bore get seasoned and broken-in. I, and many, many others, don't even clean our bolt guns until accuracy starts to fall off (often as many as 300-500 rounds). My bolt guns shoot 1/2MOA or better if I do my part.
Carbon fouling is something else. Clean the carbon from time to time if you're shooting with especially dirty powder. If my rifles have been sitting for more than a week or two I'll pull a bore-snake thru to wipe out the dust but that's about it.