Considering that your 22 quick magazine has no markings It is far from from Winchester. I haven't observed a 22 brief magazine which was not precisely the same outdoors dimension as 22lr mag. I can’t consider how a mag, such as you described, could risk be safe when inserted. A https://highimpactrounds.com/product/winchester-aa-xtra-lite-12-ga-2-75-in-1-oz-8-lead-1180-fps-25-rd-box/