I have a 1981 Remington model 700 LH 30-06. This is my main hunting rifle and I can't seem to get the barrel clean. I've cleaned it over and over and still get black on my patches. I've been using Hoppies 9 with brass brushes for years. My other rifles are just fine, I can run the brushes and patches through them just a few times and they're clean. I tried again the other day and still more black on the patches. The gun remains accurate. Any ideas?
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