Good question. Was it a still image, or a frame from a fairly fast video. Originally, I was thinking like 240 fps, but I’m not an expert at such things. Math below, just me figuring.
Every attempt I’ve ever made to capture a bullet in action has failed.
How far does a bullet fly in 1/240 of a second?
A .223 coming out of an AR-15 leaves the muzzle at around 2600-2800 feet/second. Of course, it loses a little bit of speed as it flies through the air, but it should remain supersonic well past this range.
So, let’s say it’s slowed down to 2000 feet/second. That’s 200 feet in 1/10 of a second, and 20 feet in 1/100 of a second. 10 feet in 1/200 of a second, and a little less than that at 1/240 second.
All that tells me is that either the projectile lost some speed (perhaps when it encountered the ear) or the muzzle velocity was a lot less than what would be typical.
It’ll be good to know just what caliber it was and what kind of gun. Typical AR-15 is .223 (almost the same as 5.56 NATO), but the 300 Blackout is popular too. It’s a 30 caliber that can be chambered in the AR-15. It’s larger, heavier, and slower at under 2000 feet/second. They make sub-sonic 300 blackout ammunition (around 1000-1100 f/sec). Bigger bullet, heavier, and slower. In theory, it can be silenced (or at least suppressed) more easily than most rifles because the bullet doesn’t produce a supersonic boom as it flies through the air.
Thousands of Oregon patients may have been exposed to HIV and hepatitis after an anesthesiologist disregarded infection control procedures:
https://youtu.be/Ip5KECrer1o?si=7Swqxk7oO44Jysmg
Pathetic.
That’s why I want to know all about that camera.
The math changes if it was capturing video at 1000 frames per second.
(And it would need serious light gathering capacity, so I want to know about the lens as well.)
It’s that PA humidity that makes it possible to see that supersonic bullet path. Any Kodak SLR that can shoot 1/500th could probly stop it. No need to get all digital and fancysmanchy about it.
Frames per second is only part of it. Even lower frames per second could catch the bullet if that particular frame was at the exact right time. To get the speed from the camera data you would need the bullet visible at least two frames of a known FPS to calculate bullet speed.