The most accurate 22 pistol/revolver I own is a Government model Ruger MKIII. A real tack driver, but heavy. 6 7/8 bull barrel that now sports a Leopold 4X EER scope, a great tree squirrel pistol.
Yep, I've got that one covered with the MkII Slabside. Shoots better than I can, but it's pretty heavy to carry in a hip holster. I've got a bandolier holster for mine, but still gets unwieldy after a while.