I confess, I don’t know how anyone can shoot consistently with the leading hand very near to the breach end of the forearm and supported by a U shaped opening of the thumb and index finger.
Yet I see it often. I think it may have carried over from shooting .22’s
I suggested to a fellow he might want to take a more substantial purchase with his hand gripping the forearm.
He tried about 4 shots and returned to his original method. I believe his pinky was stuck out as well like having afternoon tea.🤔

Dodging lions and wasting time.....