Re: barrel cleaning using wipe out
Your story is a bit disjointed; let me ask some questions.
1. You 'shoot seven rounds' cleaning thoroughly with sweets after each shot; getting positive copper indications after each shot, (including the last shot?)
2. Did you then shoot another 'ten rounds down the barrel' before trying to clean with Wipeout?
Because your description of the cleaning procedure is inadequate. Also, your story seems to be missing the firing of 3 shots.
My break-in procedure:
I loaded 20 cartridges in a ladder test in preparation. First, I cleaned the barrel thoroughly, of copper and powder fouling,(none of the copper solvents I've used affect powder fouling.)
Removing all the copper is paramount!
I use a copper solvent laden nylon brush, apply 5 or more to insure the entire barrel has solvent. (Brush stroke from chamber to muzzle.) Let it set 5 minutes then remove with a patch. Repeat entire process if patch is blue.
I bore sighted it in a few shots at 100 yards, then started-in with the ladder test. After each shot I cleaned for copper and powder fouling.
After the 20th shot I was zeroed at 100, had a few possible loads to try, and my barrel copper fouling was reduced drastically.