I don't think older barrels are different at all unless there is pitting present in an old barrel or chrome lining in a newer one. My cleaning routine is to spray bore cleaner in the bores and on a copper brush and swab once or twice.

Then allow to dry and run a tight cleaner soaked swab through a few times and let dry again. The final swab is with Rem-oil and usually results in a little more color until it runs clean; then a dry patch. Nothing like 30 swabs though...Geo

on the other hnd you may have cleaner bores that I do?

Last edited by Geo. Newbern; 11/01/16 04:06 PM. Reason: added last sentence