"Hoppes No. 9 -- The old formula worked fine, the current formula, not so much."
Yep. This comes up frequently.
Hoppes does have SOME water in it, a component of the ethyl alcohol, but it's not nearly enough to ensure that it will remove corrosive priming salts.
Old forumula Hoppes had benzene in it, which is pretty effective at dissolving salts, but it's also a damned wicked chemical and is now highly regulated.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.