Tradrick,

I shoot SWC's over Unique out of my 686 for plinking, trigger time and sharpening my skills. Fortunately I haven't experienced any significant leading issues, but the Unique isn't pushing them too hard out of my 6" barrel. (For the casters out there, I have no idea of the Brinnell hardness of these bullets). For my hunting loads, I'm running a 158 gr XTP over 296 - I haven't tried them over Unique, but I would prefer to run that bullet faster for consistent and reliable expansion.

IMO, if you choose to load with Unique exclusively, choose a WFN in 158 or 180 gr for your hunting needs in the 357.

Good luck!