Firearms Midterm Question and answers 100% solved 2023

Firearms Midterm Question and answers 100% solved 2023Firearms Identification (SA) A discipline mainly concerned with determining whether a bullet or cartridge was fired by a particular weapon; it is not to be confused with ballistics, which is the study of a projectile in motion. Revolvers Feature several firing chambers within a revolving cylinder shotgun firearm that is a double-barreled smoothbore shoulder weapon for firing shot at short ranges single action mechanism performs the single action of releasing the hammer or striker. class characteristics of bullets Caliber, number of lands and grooves, widths of lands and grooves, direction/degree of twist of rifling. Things that can only be associated with a certain group used to identify. Cannelure A groove around the circumference of a bullet or case. (For example, the lubrication grooves of lead bullets, or the grooves into which the mouth of the cartridge case is crimped, or the extractor grooves of the rimless or belted case.) GRC (SA) General Rifling Characteristics. the identified rifling pattern (i.e. 8/right) and the diameters of the individual lands and grooves. Using these parameters, firearm examiners can search through a database of known rifling data. The resulting search will help the investigator narrow down the search for the unknown firearm. ejector marks Tool marks left on a cartridge casing expelled by the ejector of a semiautomatic firearm after firing. Inconclusive(SA) some agreement of individual characteristics and all discernable class characteristics, but insufficient for identification sufficient agreement(SA) the agreement of individual characteristics is of a quantity and quality that the likelihood another tool could have made the mark is so remote as to be considered a practical impossibility. skid marks slippage form on the bearing surface of bullets as they enter the rifling of the barrel before the bullet engages the rifling. Skid marks are typically produced by revolvers and have the appearance of widening the land impressions at the nose of the bullet. Forensic Science the application of science to law pistol a handheld firearm Double Action trigger long pull of the trigger to cock the hammer, rotate the cylinder, and fire the piece. Repeated shots may be fired by repeatedly pulling the trigger until all rounds have been fired. gauge is a unit of measurement used to express the inner diameter slug a single shot or bullet in a shotgun shell. firing pin marks impressions made on the bottom of the cartridge by firing pin as it strikes bottom of cartridge when firearm shot