The Hoppe's ELite (or MPro7) is a great powder cleaner - been using it for a couple years now. But to get that copper, it takes a copper-specific solvent like CR-10 or Sweet's 7.62 or else the paste type cleaners. I typically use the pastes only once or twice a year, so I go the Sweets route on most cleanings.
I alternate between the MPro and Sweets like handloader does with the paste. It works good.
