Caldwell Ballistic Precision Chronograph with FPS and MPS Readings, Sun Screens and Large LCD Screen for Range Shooting

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( 4 reviews )
  • ACCURACY: Each unit is factory calibrated within +/- 0.25%
  • EASE OF USE: Measures Meters per Second (MPS) and 5 to 9,999 Feet per Second (FPS)
  • VERSATILITY: Ideal for firearms, archery, airgun and paintball rifles
  • RELIABLE: Wide sun screens for increase readability in full sun and a large LCD display for easy readabilit
  • CONVENIENT: Operates on 9v batteries (not included) and features a 15ft audio jack cable to deliver data to your smartphone (iPhone, iPad, iPod Touch, Android 2.1 or newer smartphones and Kindle Fire Tablets) – features 1/4-20 threads for tripod mounting
  • The Caldwell Ballistic Precision Chronograph is a must have for a variety of shooters

The Chrono can also deliver the shot string velocity data through the 15′ foot audio jack cable (included) to smartphone/ mobile device. A free App (, ( is available for download that displays the velocity of each shot on the phone screen and records it with other data identifying the load and environmental conditions. The App also automatically calculates Average Velocity, Standard Deviation, Min, Max and Velocity Spread for the shot string. The data is stored and can be exported via Email or simply recalled for reference at a later date. The sunshades are extra wide for better reliability on sunny days and are constructed of a durable synthetic material. Measures from 5 to 9,999 FPS. There is a ¼-20 threaded insert on bottom of housing for tripod mounting, operates on a 9 Volt battery (not included).

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  • Each unit factory calibrated to within +/- 0.25% accuracy
  • Ideal for Firearms, Archery, Airgun and Paintball
  • Simple operation, large LCD screen Meters Per Second (MPS) or Feet Per Second (FPS) readings
  • Extra wide sun screens for added shading in full sun operation
  • Option to interface with Smartphone via included 15’ audio jack cable
  • App displays velocity, logs data, notes, weather conditions, easily exports via SMS or Email
  • Carry bag included
Phone/Tablet Compatibility


Should work with all IPhones and IPods and IPad.


Should work with all phones and tablets except the ones listed below:

– LG phones and Tablets.

– HTC phones.

– Older Motorola phones (3 years or older).

– Older Nexus Tablet.

– Phones and or devices that do not have a microphone input incorporated in the headphone jack.

For Compatibility Issues please follow the steps below.

1. Make sure the most recent app version is installed on the device. Go to Google Play to see which one that is. (as of today it is 1.15).

2. Make sure the device is running the latest operating software. They can go to settings and check this: – Settings/about phone/system updates.

3. Select compatibility mode under the app settings.

4. Try swapping the cable end for end.

5. Simulate shots by using a flash light. Run it over the chrono front to back. And LED one works best.

6. Test with a different device (their own or someone else’s) to see if it is the chronograph or the device that is not working.

4 reviews for Caldwell Ballistic Precision Chronograph with FPS and MPS Readings, Sun Screens and Large LCD Screen for Range Shooting

  1. Frank

    Very simple to use chronograph. Just install battery (not included) and shoot. I shot about 50 shots through it on a very overcast day with no error codes. This unit is very light weight due to the plastic housing. It mounted to my Bosch laser tripod perfectly. I had a little trouble getting the phone app to work. It seems that the unit is real picky as to witch end of the phone cord is plugged into the unit. Other than that the app is very good after you figure it out. Would be nice it it had instructions for operating the app. As far as accuracy goes all shots were remarkly
    consistent considering it has a very small sweet spot. The unit breaks down and stores in a small carrying case witch makes it very portable. Overall a good product for the money!

  2. JR

    Superb piece of kit for the price. Knowing how fast your projectiles are going is invaluable. Not least because it will help you keep the right side of the sub-12ftlb law (in the UK), but it’ll also enable you to validate your rifles performance. I have found it invaluable for validating my handloaded (powder burning ammo) and it has singlehandedly enabled me to produce ammo – for my specific rifle – that is more consistent and more accurate than factory ammo….I couldn’t have done that without a chronograph. The Comms to the app don’t seem to work, but I can live with that for the price. If money were no object, I’d buy a radar based tool, but this really is excellent value for ammo test/development.

  3. Mary

    THIS IS MY FIRST CHRONO AND I CLOSED MY EYES AND WENT FOR IT! After spending a whole day reading reviews and watching videos of different units I bought this one. First time users of course have to experience the world of (exceptable) lighting conditions and all that comes with the dance of maintaining the right kind and amount of light above the 2 sensors so that the unit works and is accurate.

  4. Bratt

    The first time I tried this chronograph, I used an air pistol, just to see how it worked. It was easy to assemble and sync the app with my iPhone. The app was easy to use and I like the interface. The next time I used it, I took it to the range and tested with .223 and .308 ammo. When I tried to connect the cord, the plug fell apart easily, without any force on it. I was still able to use it without the cord or app and it worked great with the .223. When I switched to .308, percussion from the first round popped the sun covers off the top. No big deal, but you may want to put the chrono a little further from the bench for large calibers and/or tape down the dust covers to the rods. After using it at the range a couple times now, the results seem consistent with what I was looking for. It easily screwed onto a cheap light stand I had for photography and was clearly visible 15 feet from the bench.

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