Dr. Thomas Coyne

projectile that will travel through the brain, often producing extensive skull fractures.

And so a .22 caliber, from a handgun in particular, tends to have less force.

It can still be devastating, especially, you know, it strikes vital structures, can have fatal consequences or profound neurologic injuries, but tends to not have as much force as a 9mm or .40 caliber handgun.

In terms of, well, the weight of it, you know, probably a 40 caliber, you're looking at, you know, above 100 grains, 22 caliber or below.

But, you know, in terms of the measurement,

I'd have to show you in terms of centimeter measurement, but it's a smaller projectile itself, and also the actual gunpowder that it's packed with, so that it produces less force when it's fired.

So the projectile itself is smaller and travels with a lower velocity than a .40 caliber or a nine millimeter.

Therefore the force, mass and speed are going to be, mass and velocity are going to be less.

I try not to.

I have a son who's graduating high school and about to go off to college.

And so when I see victims that age, I have to turn off my emotions because as a parent myself, it's hard not to have your heart just break when you walk into the morgue and you see that body lying on the table.

But

I know that I'm doing my best to hopefully bring justice for her.

And so I know that my job is to go in there and figure out exactly what happened, try to provide evidence so I can get the law enforcement to hopefully bring her killer to justice.

And so I have to focus on those things and try to turn off those emotions.

Because if I let those emotions creep in, I couldn't do my job.

Sure.

Well, there are several things I can tell about a gunshot wound in the body.

Mind you, the body's laying flat on the autopsy tape.

So based upon the physical characteristics of the wounds, I can tell you what is an entrance wound, what is an exit wound.