Sig Kilo 2400 ABS-3

Sig Kilo 2400 ABS Review

In Blog by Rich15 Comments

We were very excited to get an opportunity from the awesome folks at Sig Sauer to try out the Sig Kilo 2400 ABS rangefinder! Sig made a real splash when they dove into the rangefinder market recently with the excellent performance offered in the Sig Kilo 2000. That rangefinder quickly became a favorite in the precision shooting community due to it’s excellent performance per dollar ratio. Sig didn’t stop there! This year they released the Sig Kilo 2400 ABS. This shares the same compact form factor as the Kilo 2000. However, that’s where the differences stop! The Sig Kilo 2400 ABS has a more powerful laser, an environmental sensor package, and a built in ballistics solver from Applied Ballistics!

Sig Kilo 2400 ABS Package

So what shows up on the doorstep when you buy one of these? Honestly, its a full featured ballistics package. It’s everything you need (minus a smart phone) to look up your data, build a rifle profile, upload it to the rangefinder, and head to the range. The package includes a really nice nylon pouch that holds all the Sig Kilo 2400 ABS goodies. The pouch has molle rows on it so you can attach it to your pack if you so choose. It has everything you could need.

Sig Kilo 2400 ABS-1

The Sig Kilo 2400 ABS and all it’s goodies come in this gorgeous molle pouch!

A weatherflow wind meter for checking wind speed with your phone is included. A tripod mount for the Sig Kilo 2400 ABS is included. Three batteries (I’m still on the first one and have been ranging a lot!). A really cool looking pen is in the package. A smaller pouch for just the rangefinder is in there, and of course…the Sig Kilo 2400 ABS rangefinder itself!

Sig Kilo 2400 ABS-6

A photo of all the goodies on display that come with the Sig Kilo 2400 ABS

There’s a lot of stuff in here and it’s all really nice! I’m not sure how exactly to describe the feeling you get when you open up the box and see all this but it feels like everything is high quality. From the packaging to all the goodies and accessories included. At no point are you left thinking, “Man, for the price they should have included something more.” Everything you could ask for is in here! Here’s a couple more photos of the goodies that come in the package!

Sig Kilo 2400 ABS-9

Really cool pen, that can be refilled, that came with the Sig Kilo 2400 ABS

Sig Kilo 2400 ABS-4

Beautiful tripod mount that comes standard with the kit!

Sig Kilo 2400 ABS-8

Weatherflow meter for taking wind readings with your smart phone!

Sig Kilo 2400 ABS-5

All the accessories fit in the Molle pouch so you can carry the entire kit around easily!

Sig Kilo 2400 ABS Software

I’m going to talk briefly about the software package here trying to hit the important points. I’ve seen only one bug on my particular phone where if I don’t have bluetooth enabled on the phone the app will crash but it’s immediately resolved by enabling bluetooth. Not a big deal, at all. With bluetooth switched on my smartphone had zero issues installing or using the Kilo 2400 ABS app. What do you use the app for? A number of things!

Sig Kilo 2400 ABS app1

The HUD is just what it sounds like, a heads up display of current settings. You will see a status of the bluetooth connection between the rangefinder and the phone. Along with a sync button you can use to match up the data between the devices. It is displaying the rifle profile I’m using, the range to target, and the elevation and windage adjustments needed to hit the target at that distance. Environmental data is displayed below along with muzzle energy and speed at the target distance. The “Range” button is awesome, it allows you to tap the button on the phone screen and fire the laser by bluetooth. This can be helpful if it’s really windy and you have the rangefinder mounted in a tripod for stability.

Sig Kilo 2400 ABS app2

The profile editor is pretty straightforward. It displays all the data that goes into building a rifle profile. What you name it, what drag curve you’re using for the bullet, twist rate on the barrel, muzzle velocity, etc. Garbage in, garbage out here guys. Use the custom curve library that’s included as part of the Applied Ballistics software package, if there’s one available for your projectile. I’ve found these to be supremely accurate out beyond 1000 yards and as far as 1400 yards. They’re excellent. If you need to use a G1 or G7, though, you can do so. This is also where you would enter velocity differences by temperature range if you’re good about recording that stuff!

Sig Kilo 2400 ABS app3

Next up, you can use the Kilo 2400 ABS app to view environmental details at the range. This is obviously useful if you’re keeping notes in your data book and want to record everything so you can match it up later. This way if there’s an issue between what you’re seeing during live fire to engage targets and what the rangefinder is telling you, you’re able to true the ballistics data so that everything lines up properly! The simple wind clock feature makes it easy to alter the wind speed and direction on the app. You can then hit “Sync” and will get an updated firing solution after a wind direction or speed variance.

Sig Kilo 2400 ABS app4

You can specify target details like movement speed and direction in the target menu. This would be especially useful for shooting at moving targets in competition or perhaps for hunters that plan to engage a non stationary animal! As always, if you alter the details you can sync the new data to get an updated firing solution for the most accurate adjustments possible.

Sig Kilo 2400 ABS app5

The software worked great. The only bug I saw was the app gets upset if bluetooth isn’t enabled when you launch it and that could easily just be my phone. If I switch bluetooth to enabled on my phone before, or even after launching the app, it works exactly as intended. Creating a bullet profile using the custom curves was easy as pie. The app linked up with the Sig Kilo 2400 ABS via bluetooth and uploaded the profile without any issues. I really like being able to remotely fire the laser with the app, especially on windy days when it’s hard to keep everything steady!

Sig Kilo 2400 ABS Display

The display on the Sig Kilo 2400 ABS auto adjusts the brightness based on the conditions. That’s a handy feature for anybody that’s ever been stuck with a reticle that isn’t bright enough during a sunny day! What I want to show you here is what the reticle looks like (its adjustable) and what information is displayed when you range a target. The reticle gives you choices. You can opt for a plain circle, or you can add horizontal stadia, or you can add horizontal and vertical stadia. That’s my preference since it helps draw your eye to the reticle and gives you a way to reference other shooters onto a target if they haven’t located it yet.

Sig Kilo 2400 ABS Reticle

This is the reticle with the stadia turned on both horizontal and vertical, it shows that it is using the best return, line of sight ranging, and adjustments in yards and MIL increments, it even shows battery level and any angle detected!

Sig Kilo 2400 ABS testing3

The first data displayed is the range in yards (or meters)

Sig Kilo 2400 ABS elevation

The next information displayed is the elevation adjustment, signified by the “U” and indicating a 9.4 MIL elevation adjustment

Sig Kilo 2400 ABS windage

Last up it shows the windage based on the preset, in this case a 10mph 90 degree wind from the left…I like using that as a baseline and modifying that hold based on conditions at the firing position

I want to add a bit more on the windage because I know some guys were curious how that works. In the settings for the rangefinder that you access with the mode button, you can set the wind direction based on a clock and a speed. It acts as a preset, which is the method I advocate for this kind of shooting anyway. However, you can modify it to be whatever you need through the rangefinder settings, or by changing it in the phone app and hitting SYNC. You can sync it if you like but honestly I find wind changes too often for that to be really effective. I’ve written an entire series of articles on using a 10mph, 90 degree angle, full value wind as a baseline for wind calls if you care to peruse them.

Sig Kilo 2400 ABS Performance

This is the part that everyone wants to hear about! How did the Sig Kilo 2400 ABS do as a rangefinder? I honestly will never forget the feeling I had playing with it one afternoon for the first time. I was completely blown away! This is not to say I was expecting a poor performance showing from the unit but rather how much it exceeded any expectations I had. The Sig Kilo 2400 ABS is an amazing rangefinder. I don’t think you’re going to find a rangefinder that can even match, let alone exceed, the performance of the Kilo 2400 without spending significantly more money!

Sig Kilo 2400 ABS-2

One of the ways I tested the rangefinder was with a full size IPSC plate. I wanted to see how far out I could reliably score a range on a target that size. This involved some troublesome testing. I had to find an area with a large amount of open space and set up the target. Then I drove out and stopped every few hundred yards and ranged the plate. I believe the size of the plate puts it in the “deer” category specified in the manual which states targets of that size should be rangeable out to 1400 yards or so. Right on the money, I was able to range it at 1460 yards but not past 1500. I want to point out, that’s the target itself. It was on the crest of a hill so I would not get a return from anything behind it!

Sig Kilo 2400 ABS testing1

Doing some testing of the Sig Kilo 2400 ABS, this was one day of many spent ranging different objects at different ranges to get a feel for performance

Sig Kilo 2400 ABS testing2

We’re ranging between the trees in the middle out onto the field behind it to see how easy it was to differentiate between the shrub and the tree to the right with foreground clutter present

Sig Kilo 2400 ABS testing3

Bumped it with the camera taking the photo, but 1199 is actually the tree to the right of the shrub the reticle is resting on…Hyperscan is amazing!

As you can see I also ranged trees, shrubs, tree lines, and hillsides over the course of several weeks to get a feel for the performance typical of the Sig Kilo 2400 ABS. The manual states it can score returns on trees to around 1800 yards. I’ve also found that to be a very fair assessment. Obviously the size and number of trees you’re trying to range become factors. However, I was able to score reliable ranges on hillsides to 2000 yards. So on softer and less reflective targets 1500-2000 yards seems entirely attainable and reliable.

Vehicles and large reflective targets like buildings are even easier at even greater distances. Multiple times I ranged and followed vehicles using the Hyperscan feature (more on this in a minute) out past 3000 yards! That’s excellent performance from such a small package from a company that doesn’t charge you $6000 for the privilege of owning one!

I can’t finish the performance section without speaking a bit about the accuracy of the drag curves. Here’s how I tested it, I brought my Kestrel Elite 5700 Applied Ballistics weather meter out along with the Sig Kilo 2400 ABS. I used a known rifle and cartridge profile from the Kestrel and built a new profile in the Kilo 2400 using all the same settings. Then I would range targets randomly with the Sig Kilo 2400 ABS.

After ranging the target, I would use the range reported from the Sig Kilo 2400 ABS and plug it into my Kestrel. Then, I compared the results for drop and windage with the two devices. This helps check the accuracy of the sensor package in the Kilo 2400 along with the ballistics solver within. The Kestrel is a known quantity and has given me outstanding ballistic solutions to 1400+ yards. By outstanding I mean first round hits at extended ranges with no prior dope to reference. I strongly suggest using the custom curve library on both the Kestrel and the new Sig Kilo 2400 ABS as those drag profiles are exceptionally accurate. You can true G1/G7 profiles to get them to work but I’ve found the custom drag curves often need no truing as long as you load good data for velocity, scope over bore height, etc.

Sig Kilo 2400 ABS vs Kestrel 5700 Elite ABS

Comparing the firing solutions between the Sig Kilo 2400 ABS and the Kestrel Elite 5700 ABS, they were nearly identical and equally accurate!

What were the results? Most folks say if you can get your predicted solutions to match up to within 0.1-0.2 MILs of what you wind up doing during live fire you’ve got a very accurate system. When I compared ballistic firing solutions between the two devices I found that the solutions were within a few hundredths of a MIL of each other. Meaning one device might call for 5.12 MILs of elevation and the other would offer up 5.15 MILs for an elevation solution. This tells me that both the sensor package and the solver perform as expected, with outstanding accuracy!

Sig Kilo 2400 ABS vs The Terrapin

Everybody wants to know how it did in comparison to the Vectronix Terrapin. The Terrapin has become the gold standard of outstanding rangefinder performance in the precision shooting world over the years. So I’ll say it is natural for people to want to compare the two. I’m going to talk a bit about how they perform in relation to each other. I want to first point out that the Terrapin is a minimum of another $500 to acquire on top of the retail (You should be able to find dealers that will do better) price of the Sig Kilo 2400 ABS.

Sig Kilo 2400 ABS vs Terrapin

Everybody wants to know how these two stack up against each other, the answer is…a lot better than you might have thought

Something to know about the Terrapin that I’ve found after owning one for a few years is that it really is overkill in most situations. It’s really cool to be able to range a canyon wall or a building at 3000, 4000, or 5000 yards. However, what’s the point? You can’t hit anything at that distance without a Howitzer. The point I’m making here is that for most precision shooters you need reliable rangefinder performance to around 1400 yards or so. That’s the farthest I’ve seen a target placed in a PRS match I’ve attended. The vast majority of targets fall between 300-800 yards. So having 4000 yard capability is cool, but not practical or necessary for most shooters. If you’re an ELR guy you probably want good rangefinder performance to around 2000-2500 yards.

The Sig Kilo 2400 ABS manual rates its performance as 1400 yard capable on small targets like deer, 1800 yard capable on trees, and up to 2 miles on reflective targets. Those are extremely accurate and honest performance assessments in my experience. While the Terrapin might be rated to go a bit farther in some of those categories, it may not matter. Like we discussed, who’s got a rifle that can even reach 4000 yards? Ranging cars against the Terrapin they were neck and neck to 3000+ yards. Even my 338LM won’t reach out that far! I’ll give the raw distance advantage to the Terrapin when comparing it to the Sig Kilo 2400 ABS but only because it’s a more powerful laser. The Kilo on the other hand wins for ease of use because it’s a much smaller and lighter unit and the Hyperscan feature is amazing.

Sig Kilo 2400 ABS Manual

Here you can see the maximum ranges for different targets displayed, I found these very honest and accurate during testing

The Hyperscan feature deserves its own paragraph. This feature is activated if you hold the range button down and instead of firing the laser once, it will continuously range 4x per second while you hold the button down. This makes ranging difficult targets easier. Especially if you’re using the Sig Kilo 2400 ABS freehand. You can hold the button down and wag the reticle around the target until you get a return.

If you miss a target reading with the Terrapin you have to wait a few seconds and try again. If you miss with the Kilo you just keep spraying and praying with the Hyperscan feature until you score a return. It’s an outstanding feature and it’s why I’m mentioning it a second time. The Sig Kilo 2400 ABS had no problems returning ranges on hillsides to 2000+ yards. I’ve hit individual trees out into the teens and tree lines to the high teens. It will range vehicles past 3000 yards. I hit a full size IPSC plate on the crest of a hill (no background) past 1400 yards. That’s really excellent performance!

Wrapping Up

The Sig Kilo 2400 ABS going to be the precision shooting community’s new gold standard. For 99% of precision shooters this rangefinder will do everything you could possibly ask it to do and more! Guys who shoot ELR on a frequent basis may still gravitate toward the Vectronix products but that’s already a fairly small segment of the overall precision shooting community. Anybody starting out all the way up to the seasoned competitive PRS guys will be able to range anything they need to with the Sig Kilo 2400 ABS. It is an absolutely outstanding rangefinder. I’m not sure I’ve been this impressed with a product before.

There’s a ton of material to cover in a review like this and I can’t possibly squeeze more than a month of testing into a few thousand words online. So please, if you have any questions feel free to ask below in the comments. I will do my best to answer anything you might be curious about. I can also elaborate on different areas if you are after a little more detail. All in all though, this is a really excellent item. I expect to see these showing up all over the place at matches due to the performance they offer. The package retails for $1500 but I’m sure if you talk to your favorite dealer(s) they may be able to do a little better. Even at full retail, it performs way better than anything on the market at the same price point. To beat it you would have to spend probably $3000-$6000 on a Vectronix unit and all it might get you was a little farther distance. The Vectronix units don’t have Hyperscan and that feature alone is worth its weight in gold!

Owner and Proprietor of AccuracyTech, LLC. Rich is a Firearms Enthusiast, Precision Rifle Competitor, and Writer. He is committed to bringing readers quality reviews and articles related to the Precision Shooting Sports. If you have any questions for him, please use the contact form on the site.


  1. Great review , now I want one, curse you LOL . Realy I look forward to your reviews they are in depth and informative to say the least . Now what can I sell to buy one!!

  2. Hi Rich- thanks for the great review. I may have missed it as I scanned the review but can you tell us where Sig is having this unit made?

  3. I also appreciate the 7x magnification in the Sig compared to the 5x in the Terrapin.

    1. Author

      It certainly helps, now if the SIG folks package the LRF guts and ABS software into a set of 8x binos…Leica would be worried!

      The 5x on the Terrapin is definitely a short coming and has been forever.

  4. Did you pair the sig 2400 with your kestrel 5700 elite? Is it possible?

    1. Author

      You know what, I didn’t try it because I’ve talked with Nick Vitalbo about that already. He’s probably THE main guy on the software side. The Kestrel and Kilo don’t talk right now.

      I do think there’s a market for say a Kilo 2250 with the 2400 LRF internals that gets the ballistic solutions from the Kestrel via Bluetooth.

      I’ll have to talk with him and the SIG folks more about it. Had an interesting idea for how to accomplish it with better execution than some prior attempts at the same concept by other companies. I had one guy ask about a binocular version too. So there’s room to expand on the concept.

      They’ve nailed the LRF and software, the Kilo 2400 is excellent. Now it’s up to the shooters to let them know if they want to see that stuff in other platforms like binos or whatever.

  5. Great review Rich!

    You have some of the most detailed reviews in shooting community.

    Also, it is remarkable how far the rangefinders have come from with all the software and app packages. Technology changes the long-range shooting at incredibly fast pace!


  6. How will the system work if smart phone is outside of service area? — No 4G or wifi.

    1. Author

      It will work fine, all you need a data connection for is updates for the app.

  7. Hi Rich….just wondering if you ever got a response from Sig on where they make their LRF’s?

    1. Author

      About what you would guess, Gary, a lot of the components are sourced from China. The 2400 is assembled here in OR. The other models at their factory/facilities overseas.

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