Which of the following terms are markings that can be measured or observed off of a spent bullet and/or shell casing?

Question

Quizplus · Accepted Answer

All of the given terms are markings that can be measured or observed off of a spent bullet and/or shell casing. Lands and grooves refer to the rifling inside the gun barrel, direction of the twist refers to the direction in which those grooves twist, caliber is the diameter of the bullet or bore, striations are marks on the bullet made by the barrel, and firing pin impression and breech face markings are unique marks made by the firearm's firing pin and breech face respectively.

Which of the Following Terms Are Markings That Can Be