When I ran out of W231/HP-38 all I could find was Autocomp and WSF. Both powders worked just fine in .45ACP and 9mm but old habits die hard and when 231 became available again I stocked up. Going to use up both powders in 9mm and I doubt I'll purchase them again, unless stuck in the same situation.
Most beneficial outcome of the shortage was regarding Unique. When my supply ran out and I couldn't find any I immediately relegated all my Universal to .44, .45Colt and .357. for target rounds with lead SWC's. Universal was my favorite for shotgun reloading and still is but it has permanently replaced Unique because it meters better, provides the same performance with less powder and burns cleaner.
Most beneficial outcome of the shortage was regarding Unique. When my supply ran out and I couldn't find any I immediately relegated all my Universal to .44, .45Colt and .357. for target rounds with lead SWC's. Universal was my favorite for shotgun reloading and still is but it has permanently replaced Unique because it meters better, provides the same performance with less powder and burns cleaner.