The eighth wonder of the world, the Garmin Xero C1 Pro chronograph

6MT

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So I received my Garmin Xero C1 Pro chronograph a couple of days ago. Normally, I’m the first to jump at new technology. But in this case, I owned a LabRadar since 2017 (and a few MagnetoSpeeds in between). And I was really reluctant to try a new thing until a few reviews were posted and a reasonable sample size consulted. But in the little Garmin’s case, all has been roses. So up went the LabRadar for sale and I was lucky enough to sell it in about a day.

Here’s what all the fuss is about. And here you can see one of the things that has everyone excited about...the physical size!

IMG_2353.jpg


Hard to believe (for those who have LabRadar experience) just how tiny this is!

So I was excited to try it out today. My choice of cartridges was kind of easy. A few pistol caliber cartridges that I shoot out of lever action rifles. I say my choice was easy because...lets just say, the LabRadar had some anomalies with jacketed pistol caliber cartridges. And I’ll just leave that there.

Placement of the unit is easy. Locate it between 5” and 15” behind the muzzle, and 5” to 15” to the side. Aiming couldn’t be easier either. Just make sure the rear of the unit is facing where you’re shooting. And with all of those shots fired, the little wonder never missed a shot in any caliber! Here’s my set up today…

IMG_2361.jpg


I shot a total of 200 rounds today. Of which, 180 were chronied. My rifles were all very clean babies and I wanted to foul each of the barrels with a few shots. (It wasn’t very warm today -just 1c.) My total time operating the Garmin was almost three hours. Another plus…the battery life. After three hours and the cold, the battery was only down 15%. Very nice!

I downloaded Garmin’s app, the ShotView app. Once you complete a session, the unit syncs with the app and all of the data is transferred over to the app. There, you can do all sorts of wonderful things. Being new with the unit and app, I only re-named each session.

Here’s my results for each caliber…

IMG_2360.png


IMG_2358.png


IMG-2363.png


IMG_2359.png


For each caliber, there was some statistical correcting going on. Meaning, I would throw out 10 shots that were the worst of the bunch (both the highest and lowest). There are some variances that are either very high or very low in every data set. My sample size was large enough (IMHO), that these shots were discarded and the numbers tightened up slightly. (Kind of like the “plus or minus 5%, 9 times out of 10” rule in statistical analysis.) And for what we’re doing here, more then adequate to gauge an acceptable average, ES, and SD number.

Another cool thing about the Garmin (again, for those who have LabRadar experience) is the fact that it won’t pick up other shooter’s shots. Even if they cross the Garmin’s radio beam down range. Here lies an important difference between the Garmin and the LabRadar. The LabRadar’s radio only transmits when it is triggered acoustically. Meaning it’s off until it’s triggered to turn on. The Garmin turns its radio transmitter on the second you start a new session. It’s always on…no sound based trigger mechanism. Also, the Garmin only “sees” your bullet leaving the muzzle for the first 20 or so metres. After that, the software figures out that is what it is measuring. So anything that crosses the beam width down range beyond that initial distance is ignored. I proved this today for my whole session. I had a fellow to the right of me about 6 to 7 feet away shooting a (loud) braked rifle. He was shooting across my path to the targets he set up to the left of the steel I was shooting at. Every one of his shots passed though the beam width of the Garmin down range. It ignored every one of them. (The LabRadar has some difficulty with these types of scenario's.)

Ok, I’ve bored you enough and I’ll stop now. But here’s my list of the pluses and minuses.

Pluses…
1. Exceptional battery life
2. Extremely small physical size
3. Easy to orient to your muzzle
4. Easy to aim
5. Not bothered by close shooters (even down range)
6. Very accurate and consistent
7. The ShotView app seems to work very well
8. Very easy to operate

Minuses…
1. Price (ouch!)
2. It won’t give down range speeds

So when I leave the range with a big smile on my face, there’s got to be a reason. Today, it was the eighth wonder of the world…the Garmin Xero C1 Pro chronograph.

Small caveat. Without berating other manufacturers, I am trying to be professional here. There are enough posts bashing the other chrony’s out there. While I mentioned some differences, I tried not to do any bashing. I hope you understand.
 
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Thank you for the detailed write up on your experiences with this product. I can see why so many people are selling their labradars lol
 
So I received my Garmin Xero C1 Pro chronograph a couple of days ago. Normally, I’m the first to jump at new technology. But in this case, I owned a LabRadar since 2017 (and a few MagnetoSpeeds in between). And I was really reluctant to try a new thing until a few reviews were posted and a reasonable sample size consulted. But in the little Garmin’s case, all has been roses. So up went the LabRadar for sale and I was lucky enough to sell it in about a day.

Here’s what all the fuss is about. And here you can see one of the things that has everyone excited about...the physical size!

IMG_2353.jpg


Hard to believe (for those who have LabRadar experience) just how tiny this is!

So I was excited to try it out today. My choice of cartridges was kind of easy. A few pistol caliber cartridges that I shoot out of lever action rifles. I say my choice was easy because...lets just say, the LabRadar had some anomalies with jacketed pistol caliber cartridges. And I’ll just leave that there.

Placement of the unit is easy. Locate it between 5” and 15” behind the muzzle, and 5” to 15” to the side. Aiming couldn’t be easier either. Just make sure the rear of the unit is facing where you’re shooting. And with all of those shots fired, the little wonder never missed a shot in any caliber! Here’s my set up today…

IMG_2361.jpg


I shot a total of 200 rounds today. Of which, 180 were chronied. My rifles were all very clean babies and I wanted to foul each of the barrels with a few shots. (It wasn’t very warm today -just 1c.) My total time operating the Garmin was almost three hours. Another plus…the battery life. After three hours and the cold, the battery was only down 15%. Very nice!

I downloaded Garmin’s app, the ShotView app. Once you complete a session, the unit syncs with the app and all of the data is transferred over to the app. There, you can do all sorts of wonderful things. Being new with the unit and app, I only re-named each session.

Here’s my results for each caliber…

IMG_2360.png


IMG_2358.png


IMG-2363.png


IMG_2359.png


For each caliber, there was some statistical correcting going on. Meaning, I would throw out 10 shots that were the worst of the bunch (both the highest and lowest). There are some variances that are either very high or very low in every data set. My sample size was large enough (IMHO), that these shots were discarded and the numbers tightened up slightly. (Kind of like the “plus or minus 5%, 9 times out of 10” rule in statistical analysis.) And for what we’re doing here, more then adequate to gauge an acceptable average, ES, and SD number.

Another cool thing about the Garmin (again, for those who have LabRadar experience) is the fact that it won’t pick up other shooter’s shots. Even if they cross the Garmin’s radio beam down range. Here lies an important difference between the Garmin and the LabRadar. The LabRadar’s radio only transmits when it is triggered acoustically. Meaning it’s off until it’s triggered to turn on. The Garmin turns its radio transmitter on the second you start a new session. It’s always on…no sound based trigger mechanism. Also, the Garmin only “sees” your bullet leaving the muzzle for the first 20 or so metres. After that, the software figures out that is what it is measuring. So anything that crosses the beam width down range beyond that initial distance is ignored. I proved this today for my whole session. I had a fellow to the right of me about 6 to 7 feet away shooting a (loud) braked rifle. He was shooting across my path to the targets he set up to the left of the steel I was shooting at. Every one of his shots passed though the beam width of the Garmin down range. It ignored every one of them. (The LabRadar has some difficulty with these types of scenario's.)

Ok, I’ve bored you enough and I’ll stop now. But here’s my list of the pluses and minuses.

Pluses…
1. Exceptional battery life
2. Extremely small physical size
3. Easy to orient to your muzzle
4. Easy to aim
5. Not bothered by close shooters (even down range)
6. Very accurate and consistent
7. The ShotView app seems to work very well
8. Very easy to operate

Minuses…
1. Price (ouch!)
2. It won’t give down range speeds

So when I leave the range with a big smile on my face, there’s got to be a reason. Today, it was the eighth wonder of the world…the Garmin Xero C1 Pro chronograph.

Small caveat. Without berating other manufacturers, I am trying to be professional here. There are enough posts bashing the other chrony’s out there. While I mentioned some differences, I tried not to do any bashing. I hope you understand.

Nice. I am super happy with mine too.
 
You can't throw out the extreme values before computing your SD and ES. That's cheating.
It's like ignoring the "fliers" on your group on paper and then measuring group size. Cheating.
 
Good writeup.

So far no new owner has been able to tell me if they run the internal battery down to zero and plug an external battery into the USB charge port will it run off the external battery or does it try and charge from the external battery before it will work?

I love the size of the Garmin but having a sealed unit with a Lithium Ion that will eventually die (and perhaps not work with an external battery) is one reason I won't dump my Labradar at the moment. Have had zero issues with the Labradar, bluetooth or the new version of the app. Using a 20,000 mAh external pack that I have not had to charge in over 2 years..
 
Mine runs off an external battery. I checked that. I think an external battery would charge the Garmin’s battery too.

Thanks for that. I'm wondering if the internal is down to zero will it run off the external or is it just charging the internal.....

Once the unit battery is low enough it won't run try plugging in the external and see if it turns on right away or if it 'charges' the internal battery first.

I know from iphones these small Li batts usually last 3-4 years, not sure how they wired up the Garmin to handle a dead internal batt that won't take a charge. If an external unit works then there is no worries down the road.
 
It looks like if you plug in an external battery and the Garmin is turned off, it charges the Garmin’s battery. If you turn the unit on with an external battery, it appears to be running off that external battery.
 
Thanks 6MT for the review with photos! (Photos always make the thread better!).

I definitely will be looking to buy the Garmin next year, pending a re-assessment of my budget after the Christmas season!


A comment regarding statistics and concept of throwing out chronograph outliers:

Good news: Statistics-wise, you do not need to throw out the normal looking "outliers" to assess the mean and SD. The mean and SD are central tendency measures, they are not significantly affected by outliers, provided your sample size was large enough to establish a normal distribution, i.e. symmetrical bell curve. (There is a case for throwing out data - see 2nd last paragraph for that explanation).

One SD is 34% of the variation on each side of the mean (the approx middle of the bell curve), totaling 68% of the variation in velocity. Two SD's (34% + 13.5% on each side of the mean) are 95% of the variation. The thin tails are 5% or less of the variation (<2.5% each side). These tails can be as wide as they are (ES) and not affect the center bulk of the curve, except by a tiny wee bit. Throwing out the tips of the tails is not changing your mean and SD much because the tails are a tiny proportion of the variance.

Also, interp-wise, the SD statistic is designed for and already taking care of the thin tails each side, because SD is the bulk of the variance in the middle of the distribution (68%). So therefore you don't need to throw out those edges of the ES, if the tails are indeed a tiny proportion. (If the tails are a relatively larger proportion, then the sample size is too small and the distribution is still expanding in ES and changing all the stats as new shots are added).

Looking at your first chrono photo shows a mean of 1344.7 fps, ES of 18.0 and SD of 5.5 (which BTW is excellent stats for 40 shots with a lever rifle). That means that 68% of your variation in your sample is 5.5 fps either side of 1344.7, or 11 fps wide variation. That still leaves 18.0 - 11.0 = 7 fps (32% of the variation), or 3.5 fps each side of the extreme spread and outside of the SD middle area.

ES and SD are not probability stats. They are measured outcomes of that specific sample. However as sample size increases and the ES and SD stabilize, we can assume that the SD of past performance becomes a pseudo probability for the next shot fired. However that SD indicates only 68% odds that the next shot will be within that range of velocities. Its roughly a 2 out of 3 chance.

If you throw out the edges of the ES to try and tighten the distribution, you can mislead yourself for the odds of where the next shot will measure on the chronograph.

Don't get me wrong: If you see a data point that is bizarrely way outside the rest of the distribution, then yes, toss it out for the generation of your mean and SD. If you see such a chronograph reading, its likely indicating either an electronic malfunction, or a bad/defective cartridge (bad primer, wrong powder charge, etc). The rejected data point has to be very bizarre before it warrants tossing out of the data set.

So far I am impressed with all the reviews I have read where shooters are saying the Garmin never drops a shot. That is impressive. Even with the most advanced electronics, I would expect the occasional glitch, but so far I hear the units are performing consistently well and the "outliers" may be true readings of the ammo's velocity and variance.
 
It looks like if you plug in an external battery and the Garmin is turned off, it charges the Garmin’s battery. If you turn the unit on with an external battery, it appears to be running off that external battery.

That's very good information, thank you.
 
So far I am impressed with all the reviews I have read where shooters are saying the Garmin never drops a shot. That is impressive. Even with the most advanced electronics, I would expect the occasional glitch, but so far I hear the units are performing consistently well and the "outliers" may be true readings of the ammo's velocity and variance.

The only "dropped" shots I have on mine is cycling the action and shooting too fast. I have a straight pull 22 lr Anschutz that I had a few "missed" shots because I was cycling too fast with it. Bad habit I acquired using the 10/22 and other semi auto's during mag dumps. So technically they were not "dropped", I just cycled the action too fast while using the chrony to track speed and SD, ES numbers for that lot of ammo.

The only other "dropped" shots were while using a 44 mag bolt action ruger during a mag dump. They were just too close together and "missed" 2 shots out of 5. Again the only reason for those is during a mag dump.

I have to get used to using the chrony and giving it a sec to record the shot, or just turn it off during mag dumps. Either way, just my bad habit.

I have 50 shot strings on the 6.5 CM shooting standard speed bolt cycles thru 10 shot mags and no problems there. Now that I have a good load, developed before I acquired the chrony, I used it to get a avg speed so I can set the ballistics calculator for the distance shooting I do for fun. Now I just use it to track my reloading accuracy so I can tweek my reloading if and when required tracking SD and ES.
 
Thanks for that. I'm wondering if the internal is down to zero will it run off the external or is it just charging the internal.....

Once the unit battery is low enough it won't run try plugging in the external and see if it turns on right away or if it 'charges' the internal battery first.

I know from iphones these small Li batts usually last 3-4 years, not sure how they wired up the Garmin to handle a dead internal batt that won't take a charge. If an external unit works then there is no worries down the road.

I don't see how you figure the battery will be unusable after 3-4 years. I have many rechargeable small Li batteries that are more than 4 years old and yes, they don't hold as much of a charge but they work just fine.
 
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