Ballistics Study guide

What are striation marks?

marks on the gun

What causes striation marks?

when the barrel is riffled

Do any rifled barrels ever leave the same striation marks?

no

Does a shotgun barrel have lands and grooves

no

What is class evidence?

the different gun manufacturing techniques

individualize evidence?

bullet characteristics

what is internal ballistics?

what happens in the weapon

what is external ballistics?

what happened after the bullet leaves the barrel

What is terminal ballistics?

what happens when the bullet hits the target

what is the difference between lands and grooves?

the grooves go below, and the lands go above

what is firearms identification?

A sub-discipline of ballistics that determines whether a bullet or cartridge was fired by a particular weapon

Where would you find gunshot residue?

• victim;clothing,hair arm,hand,face

Why is rifling necessary in a firearm?

provides greater accuracy