What are the classifications of ammo?
Three common bullet types are: Full metal jacket (FMJ) commonly used for target shooting and competition. Hollow point (HP) commonly used for self defense. Soft point (SP) commonly used for self defense.
What is the difference between class and individual characteristics of firearms?
In the context of this module, general rifling characteristics of the barrel of a firearm are the class characteristics of interest. Individual characteristics Marks produced by the random imperfections or irregularities of tool surfaces.
What do the numbers on a bullet mean?
Most of the time, there is just the one number for caliber. However, sometimes there is another number, such as 7.6239, 5.5645, or 919. The first number is still the caliber, but the second number denotes the length of the cartridge.
Why is a 380 called a 380?
380 Auto was designed by John Moses Browning and has been very successful since it was first introduced in 1908. The . 380 Auto gains its name by measuring the exterior diameter of the loaded cartridge (. 379-inch), much like the popular .
What are individual characteristics of bullets?
Some of the class characteristics found on a fired bullet are (1) the caliber of the bullet (diameter), (2) the number of lands and grooves, (3) the twist of the rifling (left or right), and (4) the widths of the land and groove impressions.
How are bullets rated?
All bullets are classified based on their weight in grains. For example, the most common 9mm Luger cartridges have bullet weights of 115 grains, 124 grains, or 147 grains. The range of bullet weights is actually much wider than what you might think, with the lightest being 17 grains such as in a .
What are class characteristics of a bullet?
On bullets, the class characteristics are the rifling specifications of the barrel from which the bullet was fired. These include caliber, number of lands and grooves, direction of twist of the lands and grooves, and widths of the lands and grooves.
What are the classifications of ammo?
Three common bullet types are: Full metal jacket (FMJ) commonly used for target shooting and competition. Hollow point (HP) commonly used for self defense. Soft point (SP) commonly used for self defense.
How are firearms classified in forensics?
Fired ammunition components can be classified to a group of firearms or a specific manufacturer based on the caliber, number of grooves, the width of the grooves, type of firing pin, the direction of the twist of the rifling, and other characteristics that are present based on the design of the firearm.
How are bullets labeled?
The full name of the cartridge may, or may not, have more to it than the bullet caliber. For example, the 9 mm Luger cartridge is often shortened to just 9 mm, or the word following the caliber is abbreviated to conserve space on the label. Cartridge names often include the name of the individual who invented it (.
