No one source of information.
Cannot be answered. Handguns have been around for centuries. They have been used in the military, by law enforcement, by citizens in legal self defense, and by criminals.
that particular category of death is not tracked.
Far less than the number of people killed by doctors, heart attacks or drunk drivers.
None. A handgun never killed anyone by itself. It is an object and must have a human use it.
None. Another person killed them. If you are interested in the objects used to kill others, try the FBI UCR.
There is no record of how many.
None.
256 people have been killed.
In the last 10 years 100,000,000 people have been killed by electricity in the world
328
Over 1,000 people have been killed since the death penalty was instituted.