Originally posted by: MachFive
Actually, when I looked into it, this is how it was done. I don't recall the source, because this was several years ago, so I can't verify the validity, but anyways.
As far as I could read, typically there are 5 to 7 gunmen. Only ONE of them has a real bullet, the others have hot-loaded blanks designed to produce a similar amount of recoil to the live rounds. It doesn't matter that it's not exact, because they don't have a comparison. They may "remember" that gun and that type of bullet being heavier in recoil, but since they're not shooting both to compare to, they don't think any differently.
The State whose laws I was looking into (again, this was several years ago; it was the last case where there was a death by firing squad), it was a headshot, aimed at the center of the brainpan. That way, any bullet that pierced, no matter what angle, would hit part of the frontal lobe, part of the rear lobe, and damage the corpus callosum.
Any rapid googlers may want to dig up some current sources though. I may be remembering incorrectly, or what I read may have been wrong.
But it sounds right.