86thecat - Interesting observations, thankyou. I'll now use Ed's Red (or something else) prior to the Wipeout in the .17's.

As to JB - of course, the patches will always come out black- and continue to do so as long as JB is used as it is polishing the steel, just as a brass or silver polishing paste does - never coming out clean. But- it is good for initial polishing, or keeping a full-bore in running condition during a match. I prefer not to use it in bores with only .002" deep rifling, such as my .17's, and especially not an already lapped bore like the PacNors. Yes- we'll use a bore solvent first, that's for sure.