Garmin Xero C1 Pro chronograph
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- Start date
Hmmm…interesting results. While not conclusive, that seems to imply that the Xero is measuring velocity somewhere beyond the muzzle and that mounting the Xero gives somewhat faster velocity results. Though some of that might be within the noise of testing and instrument accuracy.
Skyscreen chronographs measure velocity midway between the "start" and "stop" screens (no offense intended, you probably know this but there may be some readers that don't).
I think the start screen was 9.5 feet. I was using a 9 foot spacing so the point the Oehler was measuring velocity would have been 14 feet in front of the muzzle (that is also the location of the "proof" screen...the Oehler makes two velocity measurements on every shot).
The Oehler measured velocity at 14 feet and I had two Garmins at the same distance from the muzzle. Therefore, my conclusion is that the Garmin measures velocity somewhere in front of the unit and uses interpolation to calculate the velocity at the unit.
Since they recommend you place the unit between 5 and 15 inches behind the muzzle, the only question would be "How much velocity difference is there between muzzle and 5 - 15 inches behind the muzzle.
I call the reading "Muzzle Velocity" and go from there.
(edited to correct the distance at which the measurement was taken. 1/2 of 9 is 4 1/2. so, 9.5 plus 4.5 = 14. DUH!)
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I saw better agreement when running a Magnetospeed at the same time as a Garmin. Don't know what caused the disagreement in the photos.
That can happen with any instrument. It is the reason I run two whenever making important measurements. IF they are in good agreement, everything is probably good. If not, I've got a setup issue and I adjust to fix it.
I've heard mounting one on a rifle may influence the velocity reading due to backward movement of the rifle at ignition. I've not tested for it, though.
Good data, Secant.
Thank you for your explanation!
I will do the same: will read my Garmin measures as "muzzle velocity".
Rifle #1 is +/- 16"
Rifle #2 is +/- 13"
Rifle #3 is +/- 15" (not shown)
I wasn't setting out to perform any sort of 'test'. I was just grabbing quick MV before a match, and I had a couple Garmins on hand. I'll set-up next time with garmin mounted forward (closer to muzzle) and compare with the MS. I'll probably only have 1 Garmin though.
Missed out on one this morning from Eurooptic. Read on another forum they had them marked down to $434! Few got the deal.
Don’t know if it was mistake or getting rid of some inventory. Went back up to 544 then all the way back up 599 now.
I don’t think Garmin is worried about Athlon, but I’m Hopeful we see more frequent deals like this with the Athlon due out soon
*edit…someone posted they called and euro optic said it was a website error. Dang
Don’t know if it was mistake or getting rid of some inventory. Went back up to 544 then all the way back up 599 now.
I don’t think Garmin is worried about Athlon, but I’m Hopeful we see more frequent deals like this with the Athlon due out soon
*edit…someone posted they called and euro optic said it was a website error. Dang
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Great video and it is spot on. The Garmin watch is a shit smart watch, it is an amazing fitness/outdoors watch. I used the Apple Watch for years, it has utter shit mapping and there are no shooting apps for the watch itself. Getting more into precision shooting and not being able to have AB on an Apple Watch was the final nail for me, jumped into the Garmin world and honestly couldn't be happier.
I love seeing Garmin move more into the shooting sports too, with the Xero and who knows what else is on the horizon. They make a solid product that is great for people that actually want to USE a watch to do stuff with outdoors, vs a status symbol to go along with everything else apple that someone may own.
New Session > Pistol > 600 - 1700 FPS or 1700 - 5000 FPS
What happens when your pistol has a muzzle velocity right at the cusp of the two ranges?
That’s exactly where the 9x25mm Dillon goes at with 124 grain JHPs.
Which range should one select when working up a load?
What happens when your pistol has a muzzle velocity right at the cusp of the two ranges?
That’s exactly where the 9x25mm Dillon goes at with 124 grain JHPs.
Which range should one select when working up a load?
I mean if its never over the low range.. then the low range.. if its right at 1700 and sometimes over then the high range....
There is some overlap between the specified ranges. If it's literally right on the border you should be fine with either.
My garmin updated today at the range, missed on average 1 of every 5 rounds after the update installed. It has rarely EVER missed rounds prior to this. F'n GAY garmin! Was just at the range two days ago and it worked perfectly......as it did for 20 rounds before the update installed today.
does it say or show what has been updated?
edit: look like latest update were
edit: look like latest update were
v3.20 January 9th, 2024
- Fixed stability issues
Nah, it's 3.30.
I connect to phone every time at the range, Tuesday and Wed, no updates. Today it updated and it's not been good.
Damn,I will be refusing the update. Hopefully @Garmin is getting this. Thanks for letting the rest of us know. Sorry you had to take a hit for the team……
ETA: Just synced with my phone and now it’s bugging me to update when I turn it on.
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I called garmin customer service, also emailed them. Let them know the new update sucks ass!
Definitely don't update to 3.30. There is for sure an issue. Just got back from the range and it missed about 30% of all shots from my .223's. I also had my 22lr with me and it picked up every one of those without issue. This thing missed about 5 shots total in its lifetime, but today alone it missed at least 20. The update was the only change.
It might be nice if you linked the thread you referred to for those that aren't aware of it. Or, posted this information:
New software update fixes it supposedly. I just installed it today.
Still missing a few rounds here and there with the new update. Dropped 2/102 today, and 5/68 the other day. I don't recall it doing this prior to the last few weeks.
Garmin was attached to rifle via the arca rail so position was fixed. All fired from a bolt action so plenty of time between shots IMO:
String 1 - 30/30
String 2 - 30/30
String 3 - 27/31
String 4 - 9/10
So it started falling off and I don’t know why. Better than it was before the most recent update, but not perfect.
String 1 - 30/30
String 2 - 30/30
String 3 - 27/31
String 4 - 9/10
So it started falling off and I don’t know why. Better than it was before the most recent update, but not perfect.
You guys are definitely convincing me to make sure not to update my software. I'm looking to keep the 1k+ round streak alive of never having the Garmin fail to capture a rifle shot. It has even done well enough with pistol rounds given that I never have it positioned within it's recommended alignment window when using it on handgun as the little shelf at all the pistol ranges is well below bore level.
I wonder what they changed to cause this issue with dropped shots? Did they change something in the units determination of whether a shot is from the intended shooter or an adjacent lane? I don't think those settings needed to be messed with. I have had a lot range sessions with dudes shooting in adjacent lanes and have not had any of their shots mistakenly read as one of mine.
Yeah leave yours alone. I will add I had no other rifles around me, I was shooting in a giant bay all alone. @Garmin please fix this.
Latest update. Worked fine at a match over the course of 54 rounds (5 stages where I had the opportunity to use the Xero on a stage). Didn't miss a beat. Got all 54 shots in prone, barricade, etc.
