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Old March 30, 2001, 08:25 PM   #1
Join Date: November 10, 2000
Location: Jamestown, NY
Posts: 48
Hello, I have an old recipe for mixing a good barrel cleaner for copper fouling. it is: 1 oz. Ammonium persulphate, 200 gr ammonmium carbonate, 6oz. stronger ammonia, 4 oz. water. I tried to get the first ingredient at a drugstore, the ammonium persulphate and they never heard of it nor could they find it listed from their suppliers. Is there a substitute for that? The next ingredient is ammonium carbonate (they have that) but what is 200 gr? grains or grams?? thanks, willp
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Old March 30, 2001, 09:12 PM   #2
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Personally, I would stick to commercial mixes, your ingredients list sure scares me!
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Old March 30, 2001, 09:20 PM   #3
Join Date: November 10, 2000
Location: Jamestown, NY
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Are any of these elements dangerous?? Why are you scared? This recipe came from a publication from "The American Gunsmithing Association". think again, willp
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Old March 30, 2001, 10:15 PM   #4
James K
Join Date: March 17, 1999
Posts: 24,160
Hi, willp58

That is an old formula from the days of great glops of cupro-nickel fouling from the old bullet jackets, and I am surprised that it is given in any modern publication. With almost all jackets today being either gilding metal or mild steel, I don't think all that ammonia is necessary and it can itself be corrosive if it gets into inaccessible places, like under the stock. I agree with johnwill to stick to commercial stuff.

Of course, I should not need to caution about getting a strong ammonia solution anywhere near a nickel plated gun. It won't affect the nickel itself very much, but it will eat the copper undercladding used in most electro plating of nickel.

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Old March 30, 2001, 11:33 PM   #5
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Barnes CR-10.

The stuff is PLENTY fierce!

DON'T breathe any!

You don't want to use anything stronger.

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