I downloaded the new PPC gun rules this week, and have taken a look at them. The barrel length limit on Distinguished guns has been increased, how ever the allowable sight radius has not been increased. I measured my S&W 5" barreled PPC gun, and it has a sight radius of 7". I do not have a 6" gun to measure, but I will bet it is longer than 7.5", so it would not be legal for Distinguished matches. I wonder if the "old" style Distinguished guns now fit the rules for the Stock Auto guns? They have factory original sights from Aristocrat, and you can now have a competition magazine well on a Stock Semi Auto.