Copper remover


Well-Known Member
Industrial strength ammonia (janitorial grade at hardware store) works fine. I leave it in a few minutes at a time, works
great, dirt cheap. A couple of Hoppe's #9 patches afterwards and done. CR10 is great, too.
Hoppes #9 will take it out, but slowly.



Well-Known Member
Thanks to all. I'm trying Sweets first. It's on the way along with a catalog from Brownells ($10.00). Been reading Brownells catalog since the late 60's, can't see "everything" on a website.

Bill, I had some strong ammonia on hand some years back just for this that I'd forgotten. No clue whatever happened to it. Might have used it for cleaning!