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Caliber/calibre: In small arms, the internal diameter of a firearm's barrel or a cartridge's bullet, usually expressed in millimeters or hundredths of an inch; in measuring rifled barrels this may be measured across the lands (.303 British) or grooves (.308 Winchester) or; a specific cartridge for which a firearm is chambered, such as .45 ACP or .357 Magnum.
A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made of rigid high-strength metal , through which a contained rapid expansion of high-pressure gas(es) is used to propel a projectile out of the front end ( muzzle ) at a high velocity.
Wine barrels typically come in two hoop configurations. An American barrel features six hoops, from top to center: head-or chime hoop, quarter hoop and bilge hoop (times two), while a French barrel features eight, including a so-called French hoop, located between the quarter- and bilge hoops (see "wine barrel parts" illustration). [citation ...
A Colt Detective Special and a Smith & Wesson Model 36 snubnosed revolvers. A snubnosed revolver (colloquially known as a snubbie, belly gun, or bulldog revolver) is a small, medium, or large frame revolver with a short barrel, generally less than 3 inches in length.
A barrel chamber with pressure relief ports that allows gas to leak around the cartridge during extraction. Basically, the opposite of a fluted chamber, as it is intended for the cartridge to stick to the chamber wall making a slight delay of extraction. This requires a welded-on sleeve with an annular groove to contain the pressure. [8]
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Forensic firearm examination is the forensic process of examining the characteristics of firearms or bullets left behind at a crime scene.Specialists in this field try to link bullets to weapons and weapons to individuals.
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