Originally Posted by Clinttho
Changing to a Wolff 12# mainspring for the GP100 made a very notable improvement in DA mode. It made for a much lighter pull than the 14# Wolff Series Six reduced power mainspring did over the stock one. No difference in smoothness but DA accuracy is better.
Mine is in the shop right now getting a Wolff 17 pound mainspring due to light strikes (second visit). It was quite smooth before, very likely not original when I bought it. It seems you just can't bubba these guns into the trigger pull of ones dreams. I shoot mostly single action, so no big loss.
Messing with springs in these guns just makes them high maintenance and often unreliable. I also had to put the original spring back in my second hand Redhawk...light strikes again.