My most accurate .22 revolver is a Colt Diamondback, 4" blue with the original stocks on it. It always prints where ever the sights are looking. Got it by trading off a '98 Mauser I had that had been re-barreled (into a .243), re-blued and aftermarket stock and scope installed (bought it in this condition). The owner of the revolver wanted my rifle and I wanted his revolver. We traded even.
My handiest .22 revolver is a S&W model 43 Airweight Kit Gun, aluminum frame and cylinder. While chambered for .22 Long Rifle it does not like high velocity ammo and sticks fired cases in the chambers. I gladly fire standard velocity ammo in it. It is so light it is very easy to forget that it is on my hip. This one also produces tight groups, like the Diamondback above.