IMHO J frame triggers as a rule stink.
Yes and no...
Because of the small frame the hammer and trigger studs (pivot pins) have to be relatively close together, and the trigger has less leverage when it comes to rotating the hammer backwards. Then the distance between the stud and firing pin is less then those in larger frames which reduces the hammer travel at the firing pin height. To make up for this S&W uses stronger springs to insure reliable primer ignition under ALL circumstances, including hard primer cups.
Some users have a cure - cut the spring tensions (especially the rebound slide spring) by using lighter aftermarket springs. But this can affect reliability and invite short-stroking the trigger which will jam the action and tie up the gun.
While it won't lighten the double-action trigger pull, dry firing will smooth the contact points in the lockwork by burnishing and make it feel better, and unlike hand polishing that can remove metal, and affect tolerances, it won't possibly void the warrantee. If you are not going to pocket or ankle carry larger stocks are a big help too.
Last but not least, if the ultra-small size and lighter weight aren't all that important move up to a K-frame, Colt Detective Special, or Ruger SP 101.