Yessir, way to make a guy feel old. Whizbangs were being phased out when I started buying for myself.
I still have some, as well as Canuck 25s and 32s, Bisleys, Imperials, 22 extra long, etc.
I went through a box of those BB Caps (still have the empty box) and my thoughts at the time were that they were anything but "Super-Clean" compared to the German Acorn caps that I shot in my unlocked breech Flobert. The C-I-Ls had a pinch of flake powder in them that left a ton of residue.
Nice post, great memories.