Kellermann led research for the Centers for Disease Control and Prevention in the 1990s which found that people who have guns in their homes are nearly three times more likely to be a victim of homicide and nearly five times more likely to commit suicide.
Experts also say that simply having a gun for self-protection does not guarantee safety. They say the fear is that many people will take part in what might be considered a feeding frenzy by purchasing a gun, but not learn how to properly use it.
Sheriff Chapman holds courses for homeowners who want to learn how to safely and properly use a weapon.
"Be proficient with it. Be taught how to use it. Train with it," he said.
"I often tell people, 'If you don't think that you have what it takes to take a human life then don't bother buying one. Don't waste your money. Don't waste your time," he told CNN.
"Don't put it in a drawer and think that's the answer to everything, because it isn't."