It is difficult in practice to measure the forces within a gun barrel, but the one easily measured parameter is the velocity with which the bullet exits the barrel (muzzle velocity) and this measurement will be used in examples below. Higher pressures require a bigger gun with more recoil that is slower to load and generates more heat that produces more wear on the metal. More powder can also be used in rifle cartridges because the bullet chambers can be designed to withstand greater pressures (50,000 to 70,000 for rifles psi vs. (Fackler, 1996) Internal, or initial ballistics (within the gun)īullets fired from a rifle will have more energy than similar bullets fired from a handgun. The wounding potential of projectiles is a complex matter. ![]() The flight path of a bullet includes: travel down the barrel, path through the air, and path through a target. The term ballistics refers to the science of the travel of a projectile in flight.
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