I had one of those J22's a few years ago. Bought it from a buddy for $30. I mainly bought it out of curiousity.
It was the worst cycling pistol I ever shot. Bang, bang, click. Click (clear) bang, click (clear) click (clear) bang, bang, click (cuss)....etc. That is until I tried some CCI Minimags. It loved those. It would only jam every fifth magazine running those. End quote:
Bingo, I'm glad to see I'm not the only one that found out the cci mini mags are the correct round to shoot in a Jennings 22.