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A hollow-point bullet is a type of expanding bullet which expands on impact with a soft target, transferring more or all of the projectile's energy into the target over a shorter distance. Hollow-point bullets are used for controlled penetration, where overpenetration could cause collateral damage (such as aboard an aircraft).
These were not the first expanding bullets, however; hollow-point expanding bullets were commonly used for hunting thin-skinned game in express rifles as early as the mid-1870s. [ 12 ] [ 13 ] Also, the .303 was not the first military round with that trait since the old .577 Snider bullet had a hollow core, leaving wounds known for being ...
A ballistic tip bullet is a hollow-point rifle bullet that has a plastic tip on the end of the bullet. This improves external ballistics by streamlining the bullet, allowing it to cut through the air more easily, and improves terminal ballistics by allowing the bullet to act as a jacketed hollow point. As a side effect, it also feeds better in ...
The earliest mention of hollow charges were mentioned in 1792. Franz Xaver von Baader (1765–1841) was a German mining engineer at that time; in a mining journal, he advocated a conical space at the forward end of a blasting charge to increase the explosive's effect and thereby save powder. [4]
Examples of various small-arms flechettes (scale in inches) A flechette or flèchette (/ f l eɪ ˈ ʃ ɛ t / fle-SHET) is a pointed, fin-stabilized steel projectile.The name comes from French flèchette (from flèche), meaning "little arrow" or "dart", and sometimes retains the grave accent in English: flèchette.
The energy delivered by most 9mm loads allows for significant expansion and penetration with premium hollow-point bullets. Illinois State Police , border patrol , Federal Air Marshals , and United States Secret Service favored and used 115 gr (7.5 g) +P+ 9mm loads at 1,300 ft/s (400 m/s) for years with excellent results. [ 34 ]
This engraving shows a 12-pounder U.S. shrapnel shell c. 1865. It is fitted with a Borman fuse. In the cutaway view, the dark grey is the wall of the shell, the medium grey is sulphur resin, the light grey are the musket balls, and the black is the bursting charge.
The allowed time was very brief: travelling at 250 to 300 mph (400 to 480 km/h), a pilot typically had less than two seconds to fire at the ground target and then pull up. If the targets were dispersed among tall trees, as were some German aircraft late in the war, a greater distance was essential to avoid collision with the trees.