Actually, the best trigger on any .22 target pistol I own is on the first one I ever owned. I bought this Ruger Mark I in 1965; it cost me $85.00 retail, brand new. First, I polished the sear to be glass smooth. Then, although there was an internal overtravel adjustment, it was too difficult to adjust. I had the machine shop at the company I worked with drill and tap the trigger guard for an external adjustment. The net result was a very smooth and light let off, with the trigger stopping right after release. I shot this gun competitively for many years. It was very accurate.
John