A bullet is a projectile propelled by a firearm, sling, slingshot, or air gun. Bullets do not normally contain explosives, but damage the intended target by impact and penetration. The word "bullet" is sometimes colloquially used to refer to ammunition in general, or to a cartridge, which is a combination of the bullet, case/shell, powder, and primer. This use of 'bullet', when 'cartridge' is intended, leads to confusion when the components of a cartridge are discussed or intended.
Bullets fired from slings, slingshots, and many airguns (including BB guns) travel well below the speed of sound (about 343 m/s or 1126 ft/s in dry air at 20 °C or 68 °F). Low-power handguns have muzzle velocities generally less than the speed of sound (subsonic), while bullets fired from high-power handguns (such as a .44 Magnum) and from rifles have an initial speed faster than the speed of sound, meaning they are supersonic and thus can travel a substantial distance and even hit a target before a nearby observer hears the "bang" of the shot. Bullet speed through air depends on a number of factors such as barometric pressure, humidity, air temperature, and wind speed.

View More On Wikipedia.org
  1. W

    Optimal / Standard bullet weights in revolver rounds, 500S&W

    So if 240gr has been established as "about right" in 44 and 250-255gr in 45, how does this scale up to the 500 mag? Is there an optimal or standard bullet weight for the 500? I haven't really heard of one. I tried some math that I thought might be right, I'm probably wrong, but it figures out to...
  2. robertvarner

    Mini Mr Bullet Feeder on a Lee Classic Turret Press - 2 Questions

    I'm considering adding a Mini Mr Bullet Feeder (MBF) to my Lee Classic Turret (LCT) Press for reloading 9mm and .45, and I have a couple of questions for you Reloaders Out There! Have any LCT Press Users used the Mini MBF together and been pleased with the results? Since most bullet feeders...
  3. G8rHunter

    Do I Really Need a Bullet Drop Compensator for My Scope?

    I purchased a Leupold vx 3i 3.5x10x40mm scope and got the wrong model number, without the CDS feature. I bought it on Amazon. I am sure I can return it. However, is the CDS feature that good to warrant sending the scope back to get the CDS? Or is it that important? Thoughts? BTW, I am planning...
Back Top