I, too, am a fan of the .22 magnum. In addition to the Single Sixes, CZ and Savage rifles, I have this little gem. It's a blast to shoot and usually gets attention at the range.
I remember those. The one I fired was very ammo sensitive and wasn't completely reliable, but when it was working, one of the most fun guns you can shoot. It had a real big fireball of a muzzle flash even during the day and always got everyone's attention.