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