Standing beside one of those things feels like getting swatted in the chest with a canoe paddle.
Pulling the trigger on one makes you remember the Russkies who used them were usually dressed for extreme winter conditions with many layers of clothing to absorb the recoil, not a thin t-shirt.
Wound up putting a Monte Carlo stock on mine after the first trip to the range. Apparently Olga's preservation work didn't keep the original stock from cracking behind the receiver. My first trip exacerbated the problem and required replacement. Then I put a scope on it, and can ring the gong at 200 yards all day long. Or at least until my shoulder gives, or the muscles in my trigger finger fatigue.