Her hands slowed by rheumatoid arthritis, 71-year-old Marietta Crowder stands in front of her paper target, steadies her gun and pulls the trigger. Shots are fired in quick succession. Crowder is perhaps not the typical patron of a gun club. But she is one of seven women learning to safely handle firearms at a shooting range in a suburb of Chicago, a city wracked by gun violence and a soaring murder rate.