Be sure the gun is well lubed. I've found that revolvers that were excessively dry fired when not well lubed can accumulate wear to moving parts besides the more commonly recognized possibility of damage to firing pin or hammer nose.
This is why older, often shot revolvers have such smooth triggers. That "accumulated wear" as you put it, means all those parts that rub together as the trigger is pulled are polishing themselves. Years ago folks would suggest using tooth polish on those same parts while dry firing so they would smooth up quicker. Over lubing any firearm can make them attract and hold dirt and grit also, creating just as much, if not more wear, than shooting them dry. No real reason to have the firearm lubed any differently when dry firing it than when shooting it normally.