Search results
Results from the WOW.Com Content Network
In firearms, a blowback system is generally defined as an operating system in which energy to operate the firearm's various mechanisms, and automate the loading of another cartridge, is derived from the inertia of the spent cartridge case being pushed out the rear of the chamber by rapidly expanding gases produced by a burning propellant, typically gunpowder. [3]
Rebated-rim cartridges are known to be used on firearms using advanced primer ignition (API blowback) for its operation, notably autocannons such as the 20 mm Becker/Oerlikon series. [1] API blowback firearms have straight-sided chamber walls as possible (and sometimes slightly bottlenecked) to contain the cartridge and allow a deeper chambering.
The energy created by larger and higher pressure cartridges, such as 9×19mm Parabellum pistol cartridge, results in violent movement of the gun's action. In the case of simple blowback (and delayed blowback) the changes needed for a firearm to be able to control the higher amount of inertia and higher chamber pressures resulted in firearms ...
Simple blowback action is simple and inexpensive to manufacture, but is limited in the power it can handle, so it is seen on small caliber weapons such as machine pistols and submachine guns. Lever-delayed blowback, as seen in for example the French FAMAS assault rifle, can also handle more powerful cartridges but is more complicated and ...
Example: A .44 Remington Magnum with a 240-grain (0.016 kg) jacketed bullet is fired at 1,180 feet per second (360 m/s) [2] at a 170-pound (77 kg) target. What velocity is imparted to the target (assume the bullet remains embedded in the target and thus practically loses all its velocity)?
Experienced instructors will show examples of different firearms. "Hands-on learning will be allowed and encouraged," the DEM says, although guns won't be fired and attendees shouldn't bring their ...
Delayed blowback firearms (4 C, 16 P) S. Simple blowback firearms (40 P) T. Telescoping bolt submachine guns (22 P) Pages in category "Blowback-operated firearms"
Three congressmen wrote in a letter to the ATF that they have "grave concerns" that some law enforcement officers are "exploiting their positions to acquire and illegally distribute firearms."