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Best chronographs for airguns
Researched by James · Updated September 26, 2026 · Editorial policy
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I own and use a Garmin Xero C1 Pro on my own rifle, and that part of this page is first-hand. I haven't personally run a LabRadar or a Caldwell VelociRadar side by side with it, so those two are covered from published reviews and manufacturer specs, linked in Sources, not from my own comparison testing. Full methodology & editorial policy →
Why airgun shooters lean toward radar chronographs
Optical chronographs time a projectile's shadow as it passes over two light sensors spaced a known distance apart, which means the reading only works if light conditions are even and the pellet passes cleanly over both sensors. That's a real limitation outdoors, where clouds moving across the sun or a low midday glare are enough to throw an error or a missed shot. A radar unit sidesteps the whole problem: it bounces a continuous signal off the pellet and calculates speed from the frequency shift, so lighting is irrelevant and the unit itself sits beside or just behind the muzzle instead of ten or fifteen feet downrange. For airgun shooting specifically, where velocities are lower and the muzzle report is quieter than a firearm's, that reliability difference is bigger than the price gap suggests.
The three chronographs worth knowing
| Chronograph | Type | Price (at review) | Notes for airgun use |
|---|---|---|---|
| Garmin Xero C1 Pro | Radar (Doppler) | $499.99 | 100-5,000 fps range, IPX7, sits beside the muzzle, no downrange setup. What I chronograph with. |
| LabRadar | Radar (Doppler) | ~$625 (2022 review) | Tracks the whole flight path, not just muzzle velocity; needs a brief setup routine and, for quiet airguns, an accessory mic near the muzzle to trigger it |
| Caldwell VelociRadar | Radar (Chirp) | Check current price | No downrange setup, built-in acoustic and optional recoil trigger, works across rifles, handguns, bows and crossbows |
| Basic optical chronograph | Light-gate (optical) | ~$100-150 | Cheapest option; needs even light, a clear path overhead, and downrange placement — the setup most prone to bad readings with airguns |
Prices as verified at the time of writing; radar chronograph pricing has been trending down as more models reach the market, so check current listings before buying.
Garmin Xero C1 Pro: what I actually use
I chronograph every hunting load on my FX Impact M4 with a Garmin Xero C1 Pro. It reads from 100 to 5,000 fps, which comfortably covers everything from a low-power CO2 pistol to a magnum springer to my own 40.1gr slugs at roughly 950 fps, and it's rated IPX7 water-resistant, which matters shooting outdoors in the desert heat I hunt in. It sits on its own small tripod mount beside the bench, not downrange, so I can chronograph and confirm a group without walking anywhere between shots. At about $499.99, it's the most expensive unit on this page, and I haven't tested it against the LabRadar or VelociRadar myself, so I can't tell you it's definitively "better" than either, only that it's been reliable for the loads I run.
LabRadar and Caldwell VelociRadar: the other radar options
LabRadar was one of the first affordable Doppler radar chronographs to reach civilian shooters, and it tracks a projectile continuously through its flight rather than just at the muzzle, which lets it calculate ballistic coefficient as a byproduct of a normal chrono session. Because most airguns don't produce enough report to trigger it on sound alone, LabRadar sells an accessory microphone that clips near the muzzle to detect the shot. The Caldwell VelociRadar is a newer entrant using Chirp radar technology, with no downrange setup and a built-in acoustic trigger alongside an optional recoil trigger, and it's rated to work across rifles, handguns, bows and crossbows. Neither is something I've run personally, so treat the details here as manufacturer and reviewer information, not a field comparison.
Do you actually need one?
Worth buying
- You hunt at range and need to confirm real FPE, not the box's FPS claim
- You're tuning a regulated PCP and need to see extreme spread across a full charge
- You've had a rifle shoot inconsistently and need data before guessing at a fix
Skip for now
- You shoot informally at short range and groups already satisfy you
- Budget is tight and a fill gauge and consistent technique matter more right now
How to actually use one
- Shoot your real hunting pellet or slug, not the lightest one in the tin, since that's the only number that matters for field FPE.
- Record a 10-shot string, not a single reading, and note the average and extreme spread.
- Compare the spread to expectations: roughly 2-4% of velocity is normal for a healthy regulated PCP, per American Airgunner's tuning guide. A bigger spread points to a mechanical problem, not measurement error.
- Run the average through the FPE formula using the site's FPE calculator to see what you're actually delivering at the muzzle.
Chronographs worth considering
As an Amazon Associate, James Southern Outdoors earns from qualifying purchases. Some links may earn a commission at no cost to you. Prices and availability change. Retailer never decides the recommendation.
A chronograph only tells you there's a problem, not what it is. If your numbers show a bigger spread than expected, work through why is my PCP shooting inconsistent? next, and if the rifle groups worse than the velocity data alone would suggest, the fuller accuracy troubleshooting checklist covers everything else that can be wrong.
FAQ
What's the best chronograph for airguns?
A radar-based unit like the Garmin Xero C1 Pro is the most reliable option for airguns because it doesn't depend on light passing over sensors the way older optical chronographs do, and low-velocity, low-noise airgun shots are exactly the case where optical units struggle most. It isn't the cheapest option, but it removes an entire category of false or missed readings.
What's the difference between an optical and a radar chronograph?
An optical chronograph uses light sensors to time a pellet's shadow passing overhead, which means it needs even, adequate light and a clear path directly above the sensors. A radar chronograph bounces a continuous signal off the pellet and calculates velocity from the frequency shift, so it works indoors, outdoors, in flat light, and without the pellet needing to pass over a specific spot.
Do I need a chronograph for airgun hunting?
You don't strictly need one to hunt, but you can't verify your real FPE or diagnose an inconsistent shot string without one. Box-printed FPS numbers are measured with a specific lightweight pellet under lab conditions, not your hunting load, so a chronograph is the only way to know what you're actually delivering to the animal.
How much does a good airgun chronograph cost?
Roughly $100-150 for a basic optical unit, up to about $500 for a Garmin Xero C1 Pro and around $600 for a LabRadar, based on pricing at the time of writing. Radar units cost more but eliminate the lighting and setup problems optical chronographs are known for.
Can I use a firearm chronograph on an airgun?
Generally yes, since both measure velocity the same way, but check the unit's minimum velocity rating. Some optical chronographs have trouble triggering reliably on the quieter muzzle report and lower velocities of a springer or CO2 gun; radar units built to also read arrows and slow projectiles handle this better.
Where do I place a chronograph for airguns?
For an optical unit, set it up several feet downrange per the manufacturer's instructions, centered under the flight path, and out of direct glare. For a radar unit like the Garmin Xero or LabRadar, it typically sits beside or just behind the muzzle rather than downrange, which is one of the reasons hunters increasingly prefer them.
What extreme spread should I expect from a chronograph reading?
For a well-regulated PCP, an acceptable extreme spread across a 10-shot string is roughly 2-4% of average velocity. A bigger spread on the same rifle and pellet points at a leak, regulator problem, or fill-pressure issue rather than the chronograph misreading; see the full diagnostic path in why is my PCP shooting inconsistent?
How many shots should I chronograph before trusting a load?
A 10-shot string is the standard minimum for judging both average velocity and extreme spread. A single reading, or even three or four, doesn't reliably show whether a load is consistent, since airgun velocity naturally varies shot to shot even on a healthy rifle.
Sources
- Guns and Ammo — Garmin Xero C1 Pro compact Doppler chronograph: first look
- GunMag Warehouse — Garmin Xero C1 Pro chronograph specifications
- Pyramyd AIR blog — LabRadar Doppler radar chronograph, part one
- Caldwell Shooting — VelociRadar chronograph
- American Airgunner — The beginner's guide to tuning a regulated PCP airgun
