Since your 22 brief magazine has no markings It's not from Winchester. I have not observed a 22 limited journal which was not the same outdoors dimension as 22lr mag. I'm able to’t think about how a mag, such as you explained, could risk be protected when inserted. A photo https://highimpactrounds.com/product/winchester-super-x-20-ga-2-75in-20-pellets-3-buck-1200-fps-5-rd-box/