What can be said about Hoppes #9. It's been used by gunowners for years and years. I grew up on the smell of this, and if I could get away with it, I'd use it as after shave too. Cleans bores, and parts as good as any out there, as far as powder, and it's residue. You might want another accessory type for copper residue. I've used it since a kid, and still go for it, as I suspect 99% of gunowners do, or at least have some or had some. Until something proves itself vastly superior, I'll be loyal to Hoppes #9