The moon clips I have used in 25 years have never varied. The spring kit will help and if you have the newer style tranfer bar to an isolated firing pin type, you can get a longer firing pin (+.0015") from Brownell's. You will need snap caps to dry fire with this oversized pin but you can also tweek your strain screw and get a much lighter trigger pull. The Federal primers are not a suggestion but a MUST DO! Your best solution to your revolver with or without any gunsmithing is 1,000s of rounds of practice and pulling that trigger so it feels natural. My trigger pulls heavier than the #7 butit goes bang every single time. Lighter is not better when you make your gun into a smooth "klickenboomer". (click, click, boom, click, boom, click boom, boom, click boom, boom :-)