I understand that the double action trigger action of the 357 Magnum Ruger SP101 can be both smoothed AND reduced while retaining reliable ignition of 357 Magnum primers.

1. What is the lightest reliable trigger action that the SP101 accepts while retaining that reliable ignition?

2. What gunsmiths routinely create superior light, smooth trigger actions on the revolvers?

Wolff makes spring kits

I smoothed several ruger revolvers by my self just stay away from the sears and look for burrs just making sure there are not any can help a lot.

Here's an excellent resource on SP101 triggers:

http://www.sp101trigger.com/