Yea I've shot my 686ssr quite a bit and have not had any trouble with the spring kit. They don't mind if you adjust your sights during the course if fire. You have to shot a 90% (540) out of 600 to get into the school. I've been practicing and have until April to get in shape. I PT almost daily and am in pretty good shape. Once again I do thank you for all the tips videos and comments. I've been shooting about 2-3 local PPC matches a year and have an old Royce Weddle PPC revolver that I shoot. I have shot the 686ssr in some of the service revolver matches, but they wouldn't let me at nationals due to the trigger stop.