Considering that your 22 brief journal has no markings It's not at all from Winchester. I have never viewed a 22 quick journal that was not the same exterior dimension as 22lr mag. I can’t imagine how a mag, such as you described, could risk be safe when inserted. A https://highimpactrounds.com/product/aguila-308-win-150-gr-fmjbt-2750-fps-20-rd-box/