Originally Posted by ATCDoktor
That said, I use Hoppes #9 on the bore, bolt and bolt carrier, oprod and gas tube and have never had a proiblem with corrosion.
You might want to rethink that.
Using Hoppes no 9 to clean after firing corrosive ammo comes up fairly often, and one of the previous times this came up, a guy on Calguns ended up calling Hoppes to get the straight answer. Which was: "No"
The old formula worked fine, the current formula, not so much.
This is backed up by the excellent test Surplusrifle.com did a while back, testing various cleaners on removing salt from test strips of steel.
The page you want is here (scroll to the bottom):
Hoppes No9 plus
is formulated for Black powder, and should work fine on corrosive primers. http://www.hoppes.com/bore-cleaners/no-9-plusl[/url]