We've all heard about the case mentioned above, Suicide Vs Homicide; but that is one case.
Reading further, on the average there are approx. 400,000 cases per year of Defensive Gun Use (DGU)
The numbers very, but even on the low end, the case of "reloads" seems only to pop-up in one case out of a low estimate of 60-70,000 to a higher estimate 600-700,000
per year. Makes you think.
Interesting article on DGU numbers.
As a side note, in reading the article, look at the numbers for preventing "injury" or "property loss" due to DGU. So much for the argument that having a firearm is more dangerous.
http://www.pulpless.com/gunclock/kleck1.html