I'll second the notion that the wait time is the primary reason you had difficulty removing the One Shot residue from your cases. The main solvent in One Shot lube is hexane, which is extremely volatile. Hornady doesn't indicate in the MSDS exactly what the lubricant dissolved in hexane is, but it is clearly soluble in a relatively non-polar solvent such as hexane. It is not uncommon for organics that are soluble in very non-polar solvents to harden to a sticky residue, or even to an almost enamel-like layer when the original solvent carrier evaporates. Some type of organic solvent might have been a better approach for the One Shot residue after it had dried for an extended period. If you ever decide to go this route, you'll need something less polar than acetone or alcohols, which will not work well to remove the One Shot lubricant. Hexane, dichloromethane, chloroform, carbon tetrachloride, would probably work, but may not be easy to come by. Mineral spirits might also be effective. Alternatively, a much longer treatment with multiple washes using hot water/Dawn might be required to completely remove the sticky residue.