I want to qualify my remarks concerning the .22 WMR. My .22 WMR revovler was a Ruger Single Six Convertible, with adjustable sights. I often referred to it as a "Baby Blackhawk." So with this one revovler I had the option of economical .22 L.R. and the .22 WMR cylinder for hunting.
As to having a revolver dedicated solely to .22 WMR, not so handy a gun.