I've had my my satin nickel Combat for two years, fired several thousand rounds through it, and dry-fired thousands of times. The double action trigger remained somewhat "gritty" and the single action felt like around a 5 lb. pull with noticeable takeup.
As a Christmas present, my wife said I could get some work done on it so I sent it to Angus for an action job and installation of a combat hammer. It returned two weeks later and the difference in both the double action and single action trigger was amazing. Double action was much smoother and single action felt like a good S & W revolver with little take up and like the proverbial glass rod breaking. He also put in a lighter mainspring and recoil spring.
At the range it functioned perfectly with Fed American Eagle and my Montana Gold reloads with Winchester primers. Accuracy on steel plates seemed to improve. Not being used to the lighter and shorter pull of the SA trigger, a few second shots at the IPSC targets went off before the front sight came back down. Interesting. Was I, a lowly "C" class shooter, "preping" the trigger as the sights were moving? Or was I just fighting recoil with my trigger finger and hadn't noticed it with the heavier pull?
It will be some pleasant work to get used to my Combat. I only shot 100 rds. and my son and I spent the rest of the day at the range plinking with my 452 Lux.
For me, this work was worth the time and money.
Chris