Here's another vote for "WIPE OUT". I have a 8x57 98 Mauser sporter that I have never been able to get completely clean (i.e. a nearly white patch) until I tried "WIPE OUT". Admittedly, it took a couple of over-nite applications, but I finally got completely clean patches and that barrel is now the cleanest I've ever seen it. We (my son & I) tried several other rifles that we thought had completely clean barrels and still got the dark blue patches showing residual copper fouling. I have become a big fan of "WIPE OUT". The nice thing is it really doesn't require that much more effort than cleaning with a conventional solvent like HOPPES' #9.
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