Did you know...
- Chuck Yeager was the first person to break the speed of sound and it was a bumpy ride getting there.
- Some modern airguns can shoot a projectile FASTER than the speed of sound. This high speed can come with a price if the projectile moves to a slower speed (below Mach 1) and the pellet starts to tumble.
- The speed of sound (Mach = 1) is where an object moves at the speed of sound waves.
- When a gun shoots a projectile at or above the speed of sound, there is an audible cracking sound or mini sonic boom.
- The speed of sound in different units (assumes “standard” air):
- 340.3 m/s
- 1225 km/h
- 761 MPH
- 1116 FPS
- There are multiple descriptions for Mach measured speeds:
- Subsonic: Under 0.8 mach, 609 mph, or 893 FPS.
- Transonic: Between mach .08 to 1.2 mach, 609 to 914 mph, or 893 to 1340 FPS.
- Supersonic: Mach 1.2 to 5.0, 915 to 3,806 mph, or 1,341 to 5,582 FPS.
- Hypersonic: Mach 5.0 to 10.0, 3806 to 7612 mph, or 5,582 to 11,164 FPS.
- Also see https://en.wikipedia.org/wiki/Mach_number
- The .22-250 Remington and 220 Swift are two of the fastest production firearm bullets. The bullet leaves the barrel at more than 4200 FPS.