[Unclenick]

But vinegar also activates the surface so they tarnish again on drying. The old NRA formula uses it. The big nuisance with the liquid cleaners is getting the cases dry. Primer pockets and flashholes often stay damp. You have to shake them out individually, then let them sit out a couple of days to be sure they've dried out completely. If they are sitting mouth-up while drying, at some point you have to knock them on their side to be sure water hasn't migrated down to the casehead. I'm not convinced it takes less time or effort than tending a tumbler.