Criminalistics part 3,3

19問 • 3年前

問題一覧

A __________, is called a round, packages the bullet, propellant, and primer into a single unit within a containing metallic case that is precisely made to fit within the firing chamber of a firearm.

cartridge

A cartridge without a bullet is called a blank; one that is completely inert is called a _______

dummy

it is defined as a loaded shell for rifles, muskets, carbines, shotguns, revolvers and pistols from which a ball, bullet, shot, shell or other missile may be fired by means of gunpowder or other explosives.

ammunition

________. Its centrifugal force pushes a liquid priming compound into the internal recess of the folded rim as the manufacturer spins the case at a high rate and heats the spinning case to dry the priming compound mixture in place within the hollow cavity formed at the rim fold at the perimeter of the cartridge case interior.

Rim-Fire Cartridge

This is the projective propelled through the barrel of a firearm by meant of the expansive force of gases coming from burning gunpowder.

Bullet

Cartridge Case. This refers to the tubular metallic containignite The gunpowder. It is sometimes called “________” or “casing.

shell

. It is a metal cup containing the sensitive priming mixture of chemical compound, which when hit or struck by the firing pin would iignite

Primer

These are created on cartridge cases when it impacts the tool, again, the firearm, with adequate velocity or pressure to leave an impressed or indented mark.

Impressed Action Marks

are common to cartridge cases that have passed through the action of an auto loading or repeating firearm.

Striated action marks

. One of the most common striated action marks are called ___________. Roughness in the chamber of a firearm can scratch the outer walls of a cartridge case when loaded and removed from the chamber.

Chamber Marks

it may remain slightly forward and imbedded in the primer. Certain barrels (like in the GLOCK) drop down slightly as recoil is forcing the action open

Firing Pin Drag Marks

. Another action mark, usually found in a striated form, are those created by the extractor of most auto-loading or repeating firearms.

Extractor Marks

The extractor pulls the cartridge case out of the firearm’s chamber. As the cartridge case is pulled to the rear it will be struck somewhere on an opposing edge by a part as seen below called the ________

Ejector Marks

are indentations created when the firing pin of a firearm strikes the primer of center-fire cartridge case or the rim of a rim-fire cartridge case.

Firing pin impressions

___________ is an indentation produced at the base of many cartridges during the manufacturing process. These markings can then be used to trace a cartridge back to the manufacturer and determine the make and type of the ammunition.

head-stamp

refers to a container which is usually metal and cylindrical in shape, and that is loaded with a primer, powder charge, and bullet.

Cartridge case

It represents the oldest case head design still in widespread use. As the name implies, a rimmed case is distinguished by a rim that extends outward from the head of the case, to a diameter noticeably larger than the case body

Rimmed

It is an alternative to the semi-rimmed design. The design is an innovation intended to combine the positive head-spacing of a rimmed case, and the belted case gives smooth, reliable feeding from a box magazine.

Belted

It is characterized by a rim that is noticeably smaller in diameter than the case body.

Rebated

Lea set A

Christian Jay Santos · 53問 · 3年前

Lea set A