Sorry guys! In my coutry there is quite expensive and rare to find any product like you use and name in tis post!....
Here, the gunsmits and shooters have problems to use and buy ever the HOPPES nª9... don´tt even think another bore cleaner or copper solvent!!!
I use two "homemade" compouds, with the same effects, however, than the best prducts I use in "other times"...
The one, is AMONIAC, liquid solution, a 90% ammoniac and a 10% soluble oil (used in steel mechanization works) The product proper use is like this: A patch full of liquid pass troug the barrell, and wait... about 4 or 5 hours later, clean with a brush... If the copper ammount is low, une application do the job! In case of necessity, retry!
The two!: a liquid compound named "decapante para cobre", (sorry, I can´t translate the name... ) this product is sold by an enerprise and chemistry called "casa sima" in Buenos Aires... This solution ONLY ATTACK THE COPPER, BRONZE AND THE FINISH OF THE GUN, so, the user may be too cautious because if a drop of the solution touch the gun... ADIOS, AMIGO...
I love this product, because in my work, the clients never care about your gun´s bores... They almost ignore the copper fouling... and shot thousands of times, until the gun DON´T HIT... and before that, come with me asking for a help...
One application of this "decapante" filling the bore cautiously and dryed after 5 minutes, clean a mine of copper inside the barrel!