S&W Safety Hammerless Trigger Pull

Those revolvers were deliberately made with heavy trigger pulls so they could not be fired by children, an advertised safety feature. (With no open hammer, the only way to fire the gun was by the trigger, so the safety claim was/is valid.)

Parts for those guns are scarce, and I would not suggest working on the original spring. I suggest some more practice (use snap caps to protect the firing pin if dry firing); surprisingly, the action is quite smooth and has a built in "hesitation point", so it is actually pretty easy to hit with that gun firing double action.

Jim