I have 300 rounds of wrf ammo. This ammo was designed for the 1890 winchester mdl 61 pump. Longer than 22lr but shorter than 22 magnum. Pickup in canton.
I had a couple boxes of these when I owned a North American Arms 22 mini revolver with two cylinders I used it with niece and nephew, new to handgun shooting, and the WRF rounds made for a good transition from .22 LR before they stepped up to the much louder 22WMR (magnum).