RL>Did you mention that spent diazo fluid could be used as a replacement
 RL>for Sweets as a copper removal solution? Would it be used the same way?
No.  You have to be a lot more careful with it, as the 28% aqueous solution 
of ammonium hydroxide will pit the bore if left in more than ten minutes, and 
you must be sure not to let it run into the action or other parts.  It is 
also much more hazardous to handle.
^^^^^^^^^^^^^^^^^^^^^^^^
I use it outdoors and wear safety glasses, an apron and gloves.  I keep the 
ammonia in a wide-mouth PVC lab bottle, and use a cotton bore mop to apply 
t.
  1.      First clean carbon and powder residue from barrel with ER until
        patches come out clean.  This may take a dozen patches.
2.      Degrease barrel with mineral spirits or acetone to remove all
        oily residue from the ER.  Otherwise the ammonia won't work.
3.      Put a clean cotton bore mop on the rod, and push it out the muzzle.
4.      With the ammonia bottle set securely into a wood block on floor,
        stand the rifle on the floor with the muzzle in the ammonia bottle.
5.      Slowly draw the ammonia up into bore, and pump/cycle it 5-6 times,
        taking care not to slosh any into the action.
6.      Draw the mop back into the muzzle and stand the rifle muzzle down
        in a rack, set on a rag to catch any ammonia, for ten minutes max.
7.      While the rifle is standing, cap and remove ammonia bottle, then
        heat 1/2 coffee can full of water and 1 teaspoon of Murphy's Oil
        Soap to a boil.
8.      After the rifle has set ten minutes, pump hot soapy water through
        the bore until the mop is clean and white again.  That means all
        ammonia is flushed from bore as well.
9.      Dry the bore and chamber thoroughly with patches. Using hot water
        makes this easy.
10.     Run 2 wet ER patches through the bore to protect it.  Leave it wet 
or
        short term storage, up to 30 days.  After 30 days wipe again with
        ER or oil the bore with straight Dexron III for longer storage.
This is a fool-proof method for cleaning after having used corrosive primers 
also, as the boiling water positively dissolves the pottasium chlorate salts.
In Home Mix We Trust, Regards, Ed
--- msged 2.05
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