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Should be doable with supersonic bullets: just tape the mic to the target and impact will trigger the flash. Nice idea for next time.

I am open to any suggestion!

The cleanup was not even bad: the apple for example was split in two parts. The tomato was inside out, but still mainly in one piece. The chalk was spectacular: the entire range was in a colored mist that gently drifted away to the bullet stop on the ventilation.

Even the thin lightbulb tilts the bullet! The chalk makes it do a 90 degree turn (you are looking at its rear).

Made some .308 Winchester photos using my home-grown ultra-high speed flash. Muzzle velocity is about 2800 fps, or roughly 2.5 times the speed of sound. Many more .308 photos can be found on my weblog (click) (updating as I am processing the photo's...)

Did you use a special point source flash?

I think it is mainly gunsmoke, since the muzzle was quite close, but it still shows the bullet is coming in at a very high speed.

Here is a 3 megapixel version (2048x1360). The original is 12 megapixel and covers the same view. All pencils were hit. so the bullet tip is actually inside the yellow pencil already: All pencils were hit (so the bullet is acutally inside the yellow pencil). We used the remains for a second...

See this link for all details on the setup.

Triggering is not unlike: http://www.arduino.cc/en/Tutorial/KnockSensor

Typically iso 800 f5.6 at 10 feet Using a nikon d90 (aps c sized sensor)

It was 9mm converted AR15 and I had the impression that it was subsonic (distance muzzle-bullet was smaller than disctance muzzle-microphone with 0 delay).

Voila (or do you mean a silencer?). Also note the shock wave that is visible (dark ring).

The total cost was about 100 Euro's or 128$ in todays exchange rate. And about 3 weeks of evening hours from breadboard to first day on the shooting range.

quote: "^^^ What rail driver said and maybe some info on equipment used. Very cool." See this link for more info on the setup.

The flash has a microphone and a microprocessor with a freely selectable delay.

I built myself a very fast flash (less than a millionth of a second) and took it to a friend's shooting range to try it out: Detailed info : click here. it works.