Loc: Royse City, TX
Interesting. I run a patch totally soaked in solvent. Let it soak for about 5 minutes, and then one pass with a brush, and then patches til dry and they're not picking up anything. I then repeat that a 2nd time. You'd be shocked how much black stuff is left in there after my first run.
If I don't use a brush, I would never get all the black stuff out. I've tried it. Maybe I'm not letting the solvent soak long enough.
The Oatis website includes a couple of interesting comments on brush use. First, it states that a brush should never to used as the first step in cleaning a barrel. The barrel should first be cleaned with wet patches. Also, a brush should never be soaked in solvent because it can damage the bristles.
I only use nylon brushes since they're much less abrasive than steel or brass brushes.
And yes, I always get more powder residue on patches after passing a brush through the barrel several times.
It seems the key question in brush use and cleaning a barrel is how clean is too clean so that first shot accuracy is impacted. I never get a "flyer" in a clean barrel. However, I have always followed a break in process on new rifles.
Along similar lines, has anyone used the Tubbs Final Finish bullets to fire lap your bore? It is supposed to help accuracy and make the bore much easier to clean. Just curious if they really work or not.