Because your 22 short journal has no markings it is not from Winchester. I have never noticed a 22 small journal that was not exactly the same outdoors dimension as 22lr mag. I can’t imagine how a mag, like you described, could risk be safe when inserted. A photo can https://highimpactrounds.com/product/winchester-super-x-20-ga-2-75in-20-pellets-3-buck-1200-fps-5-rd-box/