Someone else posted exactly the same question a few months ago, or was it you???
From your post all I get out of it is what you intend to do with the gun, but absolutely nothing to indicate you have ever shot it, or any other handgun! Where does the gun shoot on paper?????????????
While there are differences from gun to gun due to variations as a result of cumulative tolerances, for the most part all fixed sight revolvers shoot fairly close to point-of-aim when the shooter understands proper sight picture and uses ammunition for which the revolver was regulated. In the case of your gun, at least the one you picture, that would be standard pressure 158 gr. .38 Special.
As with the other poster you would seem to be under the impression that a revolver's barrel should point directly at the target when sighted. This is not true! It must be aimed a significant distance below the target so that when the pistol rotates in the hand, causing the barrel to rise, on firing, but before the bullet leaves the barrel, it will be pointed at the target at the moment the bullet leaves the barrel.
I certainly hope you do not propose that S&W, which has been manufacturing revolvers/handguns since 1853, 159 years, has not yet figured out how to make sights correctly for the guns they manufacture????
Thanks to Lee's fine link I see that it was you who made the prior post in August 2011. Didn't you believe what you were told then? Have you still not fired the revolver? Or are you simply a "Troll" who gets his giggles by repeatedly asking stupid (Once maybe, more is stupid) questions on firearms forums to agitate and annoy other members??????????