Considering that your 22 brief journal has no markings It isn't from Winchester. I haven't observed a 22 shorter magazine which was not the identical outside the house dimension as 22lr mag. I can’t visualize how a mag, like you explained, could chance be safe when inserted. A photograph will https://highimpactrounds.com/product/winchester-super-x-308-win-180-gr-pp-2620-fps-20-rd-box/