Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
bore
|
The interior of a firearm barrel
|
|
|
breechblock
|
The rear part of a firearm barrel
|
|
|
caliber
|
The diameter of the bore of a rifled firearm; the caliber is usually expressed in hundredths of an inch or millimeter-for example, .22 caliber and 9mm.
|
|
|
choke
|
An interior constriction placed at or near the muzzle end of a shotgun's barrel to control shot dispersion
|
|
|
distance determination
|
The process of determining the distance between the firearm and a target, usually based on the distribution of powder patterns or the spread of a shot pattern
|
|
|
ejector
|
The mechanism in a firearm that throws the cartridge or tired case from the firearm
|
|
|
extractor
|
The mechanism in a firearm by which a cartridge of a fired case is withdrawn from the chamber
|
|
|
firearms identification
|
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.
|
|
|
gauge
|
Size designation of a shotgun, originally the number of lead balls with the same diameter as the barrel that would make a pound; for example, a 12-gauge shotgun would have a bore diameter of a lead ball 1/12 pound in weight; the only exception is the .410 shotgun, in which bore size is 0.41 inch
|
|
|
Greiss test
|
A chemical test used to develop patterns of gunpowder residues around bullet holes.
|
|
|
grooves
|
The cut or low-lying portions between the lands in a rifled bore
|
|
|
lands
|
The raised portion between the grooves in a rifled bore
|
|
|
rifling
|
The spiral grooves formed in the bore of a firearm barrel that impart spin to the projectile when it is fired
|
