Eliminator works well to remove both carbon and copper. nylon brush...? well, depending how much shooting you are doing between cleanings and what kind of pressures you are running..? If low to moderate pressure, I'm sure the nylon is fine. shooting Fclass matches, I quickly found out that Nylon was not near the level of brush to remove baked on 60k+ psi carbon.
The problem is the 1% remaining is in that crevice in the throat and just keeps building up causing accuracy issues. Picture the bullet encountering a very hard donut as it is being released.So many times we forget easy solutions for great problems.
My first pass is for carbon deposits elimination, and I use a 50-50% water/hand-dishwasher solution.
Believe me when I say that after two patches soaked in this stuff you get rid of 99% carbon deposits.
May you need a third one if you shoot a very hot and dirty poder, but that is all!
Water has been the most effective cleaner for years. Just look at the muzzleloaders.
Bore Tech Eliminator and their Copper Plus are as good as I have used. I do use some Iosso on a bronze brush in the neck area periodically to prevent a carbon ring formation. I also follow with a little Kroil. I believe my local gunsmith is the only Bore Tech distributor in WI.Bore tech Eliminator is water soluble, and doesn't stink up the house like most of the others.
It's all I've used for several years with a nylon brush, followed with a little JB on an patch wrapped around an undersized brush, chased with a patch with a couple three drops of Kroil on it
I could not find anything on the Bore Tech web site where they recommend not to leave Eliminator, C4 or Cu+2 in overnight. In fact on the Eliminator, C4 and CU+2 bottles it says before storing the firearm, dampen a patch and push through the bore as all three contain a short term rust preventative and then before using the firearm always run a dry patch through the bore. I also called Bore Tech and talked to a technician and he said they have never put out information about not leaving these products in overnight.FWIW I've been using Wipe-Out with similar success. I think the Boretech is a little stronger, Wipe-Out is safer on the barrel it's OK to leave in over-night where Boretech recommends NOT to.
I have used Bore Tech Eliminator, C4 and Cu+2 for several years and have never "found that it is NOT friendly to fire control parts, and can cause rapid corrosion of some metals". I always use bore guides on my good competition rifles so keeping this stuff out of my bolt and trigger group has not been a problem but I do have some old rifles that i do not have bore guides for and the use of these products has never had a negative effect on their bolt and trigger group. In my recent talk with the Bore Tech technician I read your statements about this to him and he explained to me how one of the things their product was formulated to avoid was just that problem. From my long term and extensive use of these products, talking to several other shooters who use Bore Tech products about what you said and talking to the Bore Tech technician I don't think the Bore Tech products are what is causing your problems. He went into a lot of interesting detail about this subject so I was thinking you might want to call Bore Tech and discuss this with them.BoreTech Eliminator is indeed effective. We also found that is it NOT friendly to fire control parts, and can cause rapid corrosion of some metals. Make sure you keep this stuff out of your bolt and trigger group. I think there are equally effective products that are less hostile to your action's interior.
I could not find anything on the Bore Tech web site where they recommend not to leave Eliminator, C4 or Cu+2 in overnight. In fact on the Eliminator, C4 and CU+2 bottles it says before storing the firearm, dampen a patch and push through the bore as all three contain a short term rust preventative and then before using the firearm always run a dry patch through the bore. I also called Bore Tech and talked to a technician and he said they have never put out information about not leaving these products in overnight.
Two comments:
1. BoreTech Eliminator is indeed effective. We also found that is it NOT friendly to fire control parts, and can cause rapid corrosion of some metals. Make sure you keep this stuff out of your bolt and trigger group. I think there are equally effective products that are less hostile to your action's interior.
2. Quote: "A few years ago the trend was to only use nylon brushes, but most of those who advocated that soon found themselves with fouling build-up and went back to using bronze brushes. Iosso or JB on a patch or nylon brush is the only sure way to control carbon build-up in the throat area, aka carbon ring."
I disagree with this statement. There is more to the story. Many very successful shooters are NOT using bronze brushes and are cleaning with the "least intrusive method". In F-Class, we are seeing trends towards longer strings of fire between cleanings. I do NOT think that JB or Iosso is necessary for many barrels, and I have seen evidence of barrel damage caused by excessive (or overly aggressive) use of compounds like these. I do not want to start a big debate. However I want to tell readers of this site that they definitely do NOT need to rush out and buy JB or IOSSO. Sometimes that stuff may be helpful but I avoid using these products, and view JB/Iosso only as a last resort. Use of wet patches, Wipeout, with very minimal brushing (if at all), is my favored practice for good barrels. YMMV. But if you have a very good shooting barrel, it only makes sense to follow procedures which are LEAST likely to change the internal dimensions and properties of the barrel.