I use GM top engine cleaner mixed with Kroil for the first scrub. It won't remove copper but is a little cheaper that some of the other solvents. I saw a gentleman using diesel fuel at the Hunter Nationals. He won the 100 yds. Don't know what that says. I have a couple recipes for some supposedly pretty good stuff but can't find all the ingredients. I sent my wife to the pharmacy to get sodium hydroxide and they almost put her on the terrorist list.
I did a test a while back to prove to myself about BoreTech Eliminator. I cleaned rifles with these cleaners first until the patches came out clean. Then I went back in with BoteTech Eliminator. BTE did go in and remove more copper the others left behind.
Test solvents were.
Sweets 7.62
Shooters Choice
Montana Extreme
Butches Bore Shine
and a few other I would have to go and look in the cabinet.
Don't take my word for it. Do the test your self. I had been using these others for years and could not believe it either. But now I know what I feel works best and I use BoreTech.
Jeff gun)----------------------------------------------------------------------------------------------
My experience is the same as Broz and I use Nickel plated jags. I've used both Montana Xtreme and Copper cream (and others) until they showed white patches and then got blue patches with BTE after, with nickel plated jags.Broz
I used to use BTE until we looked at my bore with a borescope. Looked like a gold mine and BTE was showing it clean. We put in some ME 50 BMG and blue river ran out for 10-15 minutes and borescope showed it clean then.
Also beware of the false positive for green coming off bronze jags.
Borescope is the only way to tell.
BH
Broz
I used to use BTE until we looked at my bore with a borescope. Looked like a gold mine and BTE was showing it clean. We put in some ME 50 BMG and blue river ran out for 10-15 minutes and borescope showed it clean then.
Also beware of the false positive for green coming off bronze jags.
Borescope is the only way to tell.
BH