Chrono

[Deerstalker]

https://www.caldwellshooting.com/ra...s/ballistic-precision-chronograph/720001.html
This is the chrono I have used for several years with excellent results. I don't connect the USB cable anymore & just note the FPS and pellet weight for each shot. These figures are then entered into this excel file that I use with the PC.

This data nay help some folks.

FPS = Feet Per Second, MPS = Meters Per Second, FPE = Foot Pounds of Energy.
To convert to Joules multiply FPE by 1.3558, Joules to FPE multiply by .7376
To convert MPS to FPS, MPS x 3.2808399 = FPS .
To convert FPS to MPS, FPS x .3048 = MPS.
FPE Formula is Pellet weight (gr) x FPS x FPS divided by 450240 or 450436.7.
450240 is 2 x velocity of gravity x 7000, (2 x 32.16 x 7000 = 450240) 450436.7 is 2 x velocity of gravity x 7000, (2 x 32.17405 x 7000 = 450436.7) The constant 450240 or 450436.7 depends on which value you use for the velocity of gravity, (acceleration due to gravity). 32.16 ft/s/s or 32.17405 ft/s/s. There are 7000 grains in one pound. The difference does not matter which ever constant is used for the FPE calculation.

 

[beerthief]

If that's complicated just wait till you spend an hour trying to get a traditional one setup and it still won't read half your shots. It's less complicated that linking a Bluetooth one to a device.

i use the cheap china one you just push one button and shoot a string . has never failed in the last 3 years .

 

[NateChrony]

just looked at Nate chrony ,way to complicated to me , and i would need set up another devise to use it . useless by itself .

Holler if you need anything... Yes - its a little more technie than the traditional shoot over chrony's, this is by design.
We didnt include a battery or a screen - as "everyone" has a mobile - which is the worlds best screen & has a battery. This allows us to make it more rugged & keep costs down.

The setup process is to connecting your device to the Chrono Wi-Fi, then scan a QR code. It will open your browser & off you go.
(no apps to install, only the wifi to configure)

 

[Ezana4CE]

I bought the Nate Chrony via pyramid air. So far so good. I only have one gun (HW50s). I am a bit of a klutz with setting up any electronic stuff so my better half helped me hook it up to the iPad - which she said was easy. Next day I went out and used it and it worked.
With the HW50 being a break barrel I took a little care in making sure that I didn’t bash it as it was cocked, but it didn’t make the effort harder. At some stage I’ll get a longer cable because during the cocking it’s too easy to accidentally pull the cable out of the USB.
For those who are unfamiliar with the unit these are my initial observations, this is my first chrony so I can’t compare it with anything.

1) It’s portable and easy to set-up .

2) You could take it anywhere

3) It’s a clever design - costs are kept down by not needing providing an app, a separate screen, or a internal battery.

4) it’s only for airguns.

5) I think it’s a good tool for newbies. If you order one be sure to read up on which adaptor comes with it and which one to order. They ship directly from Australia so if you think you might need several adapters combine shipping. If you think you might want one, buy it before international delivery slows down for the holidays. For me, delivery was 4 or 5 days faster than expected and was about a week as I recall.

You can order the NateChrony stocked domestically (in the US) via @Hajimoto ‘s website.

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Hajimoto Productions LLC All products offered are INTENDED for the use on airguns only. It is a violation of Federal law to use any product in a manner inconsistent for which it was intended. It is your responsibility to know the laws in your state, county, and city and to fully comply with...

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