Considering that your 22 short journal has no markings It's not from Winchester. I have never found a 22 small magazine which was not precisely the same outdoors dimension as 22lr mag. I am able to’t think about how a mag, like you explained, could chance be protected when inserted. https://highimpactrounds.com/product/winchester-super-x-20-ga-2-75-in-8-7-8-oz-1210-fps-25-rd-box/