Considering that your 22 small journal has no markings It is far from from Winchester. I haven't seen a 22 brief magazine that was not exactly the same outside dimension as 22lr mag. I can’t envision how a mag, like you described, could possibility be secure when inserted. A photograph https://highimpactrounds.com/product/winchester-ammunition-long-beard-xr-20-gauge-3in-6-1-1-4-oz-shot-lok-lead-1000fps-10-rd-box/