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In technical terms, the two basic tools for ballistic investigations are the comparison microscope, which allows comparison and effective analysis of the evidence, and a software program that allows for the ballistic comparison using a system which stores the data and image base of firearms for further comparison in

Small-arms ammunition is always of the fixed type; complete rounds are usually called cartridges, and projectiles are called bullets (or shot in shotguns). Cartridge cases are most commonly made of brass, although steel is also widely used, and cases for shotgun pellets are made of brass and cardboard.

Each cartridge contains one round of fire. Thus, cartridges are rounds, and because bullets are often shorthand for the cartridge, bullets are now also called rounds.

Stereo microscopes are used to determine basic class characteristics of fired bullets, bullet fragments and cartridge/shotshell cases. A comparison microscope is used for the examination of fired bullets, bullet fragments and cartridge/shotshell cases.

The science of projectiles and firearms is defined as 'ballistics' and it can be divided into three distinct categories: internal, external and terminal.

Sometimes, even bullet casings have serial numbers on them, and this has been a useful tool for tracking down criminals. There are many pros and cons to requiring serial numbers on ammunition, and both sides are worth exploring. Currently, there are no strict laws in America requiring ammunition to have serial numbers.

Ballistics can be broken down into four areas: interior, transitional, exterior, and terminal.

Bullets fired from guns have distinct markings, as unique as fingerprints. Once the state lab has one bullet, all they need is a gun, a test fire, and time to compare the two projectiles. Almost every bullet fired from a gun, can be traced back to that gun using a microscope.

The bullet as in projectile fired from a gun? No. The only way a projectile can be traced back to a particular firearm is if a recovered projectile is in a mostly intact condition. It can be slightly deformed at the tip, but the base and shank must be intact for microscopic comparison.

Bullets fired from guns have distinct markings, as unique as fingerprints.Almost every bullet fired from a gun, can be traced back to that gun using a microscope.