Editing Bullet (section)

== Speed ==
Bullets used in many cartridges are fired at [[muzzle velocity|muzzle velocities]] faster than the [[speed of sound]]<ref>{{cite web |title=Handgun Ballistics |url=http://www.hornady.com/assets/files/ballistics/2012CatalogCenterSpread.pdf |url-status=dead |archive-url=https://web.archive.org/web/20150421011101/http://www.hornady.com/assets/files/ballistics/2012CatalogCenterSpread.pdf |archive-date=21 April 2015 |access-date=28 January 2017 |website=hornady.com}}</ref><ref>{{cite web |title=Ballistics – Rifle Ammunition Product Lines |url=http://www.hornady.com/assets/files/ballistics/2017-Standard-Ballistics.pdf |url-status=dead |archive-url=https://web.archive.org/web/20170202073129/http://www.hornady.com/assets/files/ballistics/2017-Standard-Ballistics.pdf |archive-date=2 February 2017 |access-date=28 January 2017 |website=hornady.com}}</ref>—about {{convert|343|m/s}} in dry air at {{convert|20|C}}—and thus can travel substantial distances to their targets before any nearby observers hear the sound of the shots.

Rifle bullets, such as that of a [[.223 Remington|Remington 223]] firing lightweight varmint projectiles from a {{convert|24|inch}} barrel, leave the muzzle at speeds of up to {{convert|4390|kph|mph|-1}}. A bullet from a 9&nbsp;mm [[Luger pistol|Luger]] handgun, reaches speeds of only {{convert|2200|kph|mph|-1}}. Similarly, an [[AK-47]], has a muzzle velocity of about {{convert|2580|kph|mph|-1}}.<ref>{{Cite web |last=Heidt |first=Amanda |date=2023-09-09 |title=How fast is a bullet? |url=https://www.livescience.com/physics-mathematics/how-fast-is-a-bullet |access-date=2023-09-27 |website=livescience.com |language=en}}</ref>