Have any of you guys used M Pro 7 copper remover? It looks to be a decent product. When using these types of copper solvent should you use a patch to remove the copper or do you need to soak a bronze or nylon brush in this solvent? Also is it relatively easy to remove copper that has been in the barrel for about 2 months? (Last cleaning did not do the trick!) Someone recommended flitz but I would prefer to use regular copper solvent as of now.
Sweets 7.62 Solvent will cure all your copper woes. It'll also stink up the room with a strong ammonia smell, so make sure to have good ventilation. Use a nylon brush and follow the instructions and you'll be good to go.
I use Hoppes #9 Copper solvent and have not used M Pro, but whatever copper solvent you use, you still have to use a borebrush. For me, I see to get better cleaning action when I dip the brush in the solvent and run it through the barrel and chamber. It's not hard to do, but it may require you to repeat 2 or 3 times - brush, run cleaning patch, repeat. 2 months is not a problem. I had clean copper buildup from 6 months ago on guns and was able to clean it all out. You may want to re-examine the barrel the next day after you cleaned it in bright sunlight. Maybe it's just me, but I can see the copper (if any) in the rifling better in sunlight than with indoor or artificial light.
Hoppe's 9 Copper Solvent comes highly recommended but the first time I looked for the stuff I couldn't find it, so I ended up trying Barnes CR-10 copper remover instead. Haven't looked for Hoppe's since. Scary potent stuff, that CR-10. Takes off copper and brass marks quickly; I rarely if ever have to soak any fouled parts overnight with Barnes. Works fastest with a nylon brush but I can even use a cotton swab soaked with CR-10 to remove most brass and copper buildup, and it also breaks down regular caked-on carbon fouling easily as well.
Hoppes works good enough. Use a wet patch, let is soak a while, and then run dry patches down the barrel until it comes out clean. You may want to run a slightly oily patch down the barrel. There is no way in hell I would remove steel from the inside of a barrel that wasn't rusted.
i second the hoppes #9 bench rest copper solvent i bought a used 9mm and it had copper fouling on half of the grooves of barrel and wouldn't come out it was actually tumbling the bullet i put it in a ziploc bag overnight with the hoppes and a 3-4 passes with wire brush and 3-4 with bore snake and it was as good as new do your self a favor buy a bore snake for every caliber and as soon as your done shooting run it through with some solvent a couple of times u will never have this problem again and it only take about a one minute
