The original question having been answered I'll do
as I always do when this cleaning topic comes up,
I recommend Ed's Red Bore Cleaner DETAILS

It works very well and is economical to concoct.

Here you can see how it removed leading left by some old paper shells:


JMTC

JC

Last edited by JayCee; 04/08/10 12:58 PM.
"...it is always advisable to perceive clearly our ignorance."ť Charles Darwin