Some of those Rugers (maybe all of them, but some people do complain and you can't tell, over the internet, if it's the Ruger .22 or the guy complaining) really are sweet shooters.
Mine is an old (bought it new in 1982 or 83) Ruger Mk1 5.5" bull barrel. Only thing I ever did was replace that hooked front sight (kept snagging the inside of the holster) with a Ruger Single Six front sight (ramped, back to front).