The clue that the gun is most likely not a 32 or something bigger than a 22 is the fact that its 7 shot. These pictures appear blown up / not 1:1 in size. To my knowledge, H&R never made a 7 shot 32 S&W short in a solid frame revolver. I believe the actual gun in the photograph is much smaller in all ways.
Its also not 30 rim (obsolete by then). 22 WRF would appear larger than 22lr, but I think the pics are blown up some somehow.
Winchester 73, the TFL user that won the west