What solvents do you like for cleaning your Sakos? I've used all kinds of products over the years, including name brands, water-based solvents designed to neutralize corrosive primer residue, GI bore cleaner, and whatever. Lately I've been using Ed's Red from Brownell's for sporting rifles and Sweet's 7.62 for military. I will run an occasional patch of Shooter's Choice copper cleaner down the bore of the sporting rifles to make sure I'm not getting copper buildup (the Sweet's is a copper reagent; it stinks of ammonia). What's your preference? And what solvents do you know of that are definitely safe or not for use on old-style blackened aluminum finishes? A while back I was cleaning some guns in preparation for an estate sale. I started cleaning a Colt Cobra with Hoppe's #9 and suddenly realized the finish on the alloy frame was coming off. I quickly washed off the Hoppe's and finished the job with something else. I mentioned this to a friend and he said, Oh yeah, I thought everybody knew you don't use Hoppe's on an alloy frame. Now I'm reasonably certain the hard anodizing on most modern alloy parts is resistant to Hoppe's, but I work with enough older guns that I've stopped using Hoppe's altogether. Any more guidance on what is and isn't safe with older alloy finishes?