The Model 72A had some re-created elements, notably a sound lifter; the preceding one particular was break up. Model 72s had no pull-bodyweight adjustment screw as is identified within the 69As. 22LR, not for that 69A’s .22 S, L, & LR. I think this intended the chambering and rifling were https://highimpactrounds.com/product/winchester-aa-xtra-lite-12-ga-2-75-in-1-oz-8-lead-1180-fps-25-rd-box/