I would think that almost anyone's holster for the Model 10 in your barrel size would fit, unless it is extremely form-fitted to the firearm. The K22 was built on a K Frame.
I just checked the Bianchi site you suggested and they list a 7000 AccuMold holster for a S&W Model 19 w/6" barrel. Would that be the type I'm looking for? I don't see anything for Model 10's unless I missed them.
