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Old February 26, 2012, 04:30 PM   #4
Bud Helms
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Join Date: December 31, 1999
Location: Middle Georgia
Posts: 13,013
I don't believe it does. For sure the new 'PAINLESS' BLACK POWDER BORE CLEANER by Wipeout claims it is not.

Here's one from Barrett that specifically claims to be ammonia free: Heavy Bore Cleaner

Precision shooters I know have been using Sweet's for years to attack copper buildup. I think the ammonia was what made it so effective at that task. I was taught it was not a problem unless left to contaminate brass. It can harm brass, no doubt. But a good general cleaning and lube afterward will prevent that.
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