Every time I go to the range I see [right-handed] pistol shooters putting their left thumb over their right. Wrong. To get a secure grip on a handgun, place your right thumb over your left. Is reversing proper thumb placement a natural instinct, bad training or both? I’m hardly the model of pistol perfection; I’ve got more bad habits than a convent without a tailor. But I don’t do the dumb thumb thing. Never have. You?