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Am I mixing up trouble ?

Dose anyone know if there is harm in cleaniing barrel bore with Hoppe's 9 then again with Shooter's choice to remove cooper and plastic and then a final clean out with Hoppe's 9 ? I have done this for awhile now, but read to watch out that some brand's don't mix.
Comments
(can't remember which) that mentions a couple of specific combo's that can result in an etched barrel or cylinder.
dcs shooters,
ADDED:BY WHO [?][?]
Don't be rude.
Not rude. Most cleaners have instructions about mixing with something else [;)]
_
Your initial reference to the poster was rude which is why I deleted it. [}:)]
Check out KG Industries' web sight. They have solvents that actually work, expecially on copper fouling.
The reason they state this is because some solvents, when mixed together, will form acids, amines, etc, and can cause etching of the bore.