(Named after its originator, C.E. "Ed" Harris, who writes for the American Rifleman)
Equal parts of:
Note: Marvel Mystery Oil is rumored to be composed of ATF and kerosene.
Equal parts of:
Plug the breech and fill the bore with this solution. Let it stand until a grey scum forms at the top, and then pour it off. CAUTION : the scum is lead, handle appropriately.
(from the Outer's Foul-Out Patent)
The formulation for the copper removing solution is: 3.62 grams/liter of Copper (II) Acetate and 38.5 grams/liter of Ammonium Acetate in distilled or deionized water. The ammonium acetate is there to aid in the solubilization of the removed and oxidized copper and the copper acetate is used with the battery driven systems that to maintain a constant potential between the barrel and the electrode.
The lead out solution formulation is as follows: 38.5 grams/liter of Ammonium Acetate and 6.50 grams/liter of Lead (II) Acetate in distilled or deionized water.
NOTE : The Aldrich Chemical Company sells 100 grams of Copper (II) Acetate for $18.70 and 500 grams of Ammonium Acetate for $17.30. If one assumes $1.00 per gallon for distilled water (this is a high estimate), you can make the solution for copper removal for $1.60 per quart. This does not include shipping costs on the chemicals. The cheapest price found for the Cop-Out solution from Outers is $15.00 per quart via Lock, Stock, and Barrel. 1000% profit margin is pretty good.