tag:blogger.com,1999:blog-6704279619711675675.post7179531861333163306..comments2023-12-20T16:50:44.960-07:00Comments on Minnesota Rifle Shooting: Blue Goop -- Copper removalHawkeyehttp://www.blogger.com/profile/14273504927582785622noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6704279619711675675.post-19892055873789346092009-10-24T19:40:00.136-07:002009-10-24T19:40:00.136-07:00like you, I don't think I've ever had a ba...like you, I don't think I've ever had a barrel with a copper fouling problem. I've always cleaned with JB and Kroil but I don't know if that has anything to do with it.<br /><br />As I haven't yet had a chance to find a local source for 28% Ammonia, I mixed some up with household (10%) sudsy ammonia we all have under the sink.<br /><br />I don't know how you're suppose to know if it's working as the patches start out blue and all seem to come out gray. It does look like it works ok on powder fouling and the price is right so I might use it again.Mark Havlik (Rip Van Winkle)http://mrra.orgnoreply@blogger.com