I got my scope on Friday, and was surprised to see that I still have carbon & some copper in the barrel. This is a newer 224 Valkyrie barrel on a Bartlein blank, less than 100 rounds through it, and I cleaned thoroughly after both shooting sessions, and on this last cleaning I ran patches with Cu cleaner till they came out clear. Patches only, though, not a brush, so maybe I'll go back in with a brush tonight and see what happens. I enhanced the colors for emphasis. The carbon and copper are most prominent for the first 1/4 from the breech, tapers off rapidly after that.
I have to agree with others, for $50 this borescope is a great buy. It was easy to set up and easy to use, and not only will it help me assess my cleaning protocol, but like JE said, it'll be great to see how this barrel evolves with usage. By the way, JE, I sure appreciate your contributions on the forum. Note the scoring on the 3rd image - I use a carbon fiber rod through a quality guide so I don't think I could have done this - maybe when the rifling was cut?
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