Because your 22 limited journal has no markings it is not from Winchester. I have never witnessed a 22 small journal which was not exactly the same outdoors dimension as 22lr mag. I can’t picture how a mag, such as you explained, could risk be protected when inserted. A photograph https://highimpactrounds.com/product/winchester-defender-12-ga-2-75in-1-oz-rifled-slug-00-buck-1150-fps-10-rd-box/