Overview+JH

=Ballistics Overview -=
 * Ballistics is the study of bullets and firearms, which are weapons capable of firing a projectile using a confinrd explosive, such as gunpowder
 * Fire arms in today present times are divided into two basic groups
 * long guns - requires two hands
 * hand guns - requires one hand
 * revolvers
 * semiautomatics
 * [[image:800px-Many_bullets.jpg width="452" height="259"]]
 * bullets that are fired from a fire arm have patterns of grooves and lands that match the rifling patterns of the guns barrel
 * A cartridges contents
 * primer powder
 * gunpowder
 * a bullet
 * a casing to hold it all together
 * Caliber - it is the measurement in diameter of the cartridge
 * Gunshot residue - found on the victims, shooters or near by objects can help investigators recreate a crime scene
 * an investigator can determine the trajectory and the location of the shooter by using at least two reference points
 * there are two major forces acting a bullet once it is shot
 * the gunshot
 * downward force of gravity
 * An examination of the body can determine where the bullet entered and exited

Sources :
 * Ballistics
 * http://en.wikipedia.org/wiki/Ballistics
 * http://library.med.utah.edu/WebPath/TUTORIAL/GUNS/GUNBLST.html