Review - Athlon Cronus BTR

Tomochan

CGN Ultra frequent flyer
Rating - 100%
341   0   0
Location
The Cariboo, BC
THis is a cut and paste from my website so formatting may be screwy but here is my take on this popular new (ish ) scope:

dsc_0539.jpg


A month or so ago I was looking to buy a new scope but with some custom guns on order etc. I didn’t want another Alpha-Priced purchase so close to Christmas. Ideally, I was looking for something that fell between the price points of the Vortex PST II and the Vortex Razor II ( which, in Canada, means somewhere between C$1500 and C$3500 ) and like everyone else out there I wanted the features and glass to be nearer the latter than the former !

I had read quite a lot about Athlon on US forums and people seemed very impressed – particularly so by their top-of-the-line Cronus BTR – and I figured that this ‘Made in Japan’ 4.5-29×56 scope in Mils would work just nicely for me.
Athlon is distributed in Canada by Scott Gaalaas at Red Star Target in Alberta which gave me confidence. While I’ve not met him in person, Scott is known in the shooting community as a real shooter who actually uses the products he sells and who offers top-notch service to customers whether they are buying a scope or a bunch of paper targets. How much better to deal with a genuine gun guy than it is to deal with a salesman who will happily bull#### about anything just to make a sale.

Priced in Canada at around the C$2700 mark ( US MSRP is US$2159) the Cronus BTR is in a tough market segment as the price point is comparable to the lower end Nightforce, the Steiner T5Xi and the Bushnell Elite 4.5-30 each of which scopes have strong followings.
Athlon pride themselves on customer service and back their product with a Vortex-like “no questions” warranty ( more on this later! )
My Cronus BTR arrived from Red Star Target securely packed in a box with a sunshade ( an extra cost ) a cleaning cloth and an owners manual that is properly written in a version of the English language understandable by all but the chronically unschooled. Also included were some stickers and ( a freebie from Red Star – thanks Scott !) a nice T-Shirt which, sadly, my wife has purloined for a sleeping shirt. Oddly though – especially in a $2K plus item – there were no scope caps at all. Come on Athlon, even Bushnell include some scope caps.

20171122_141938.jpg


First off I will admit to being a bit old-fashioned and so I equate a nice heft to a product with quality and the Cronus BTR feels suitably weighty without being too heavy. Actually it weighs 35.8 ounces which is positively a featherweight compared to my Vortex Razor II’s. The finish was nice and even and upon close examination the whole scope had that hard to describe quality feel to it.

For the tech spec junkies all the data re: this scope can be found here: https://athlonoptics.com/product/athlon-optics-rifle-scopes-cronus-btr/

I chose the mil/mil version of the Cronus BTR with the illuminated APRS FFP reticle which is a Christmas Tree-style reticle without being so terribly “busy” like some are. Overall, I like it – it is a good balance.
APRS-FFP-IR-MIL-452956-1024x512.png

After examining the scope and doing the obligatory spinning the turrets that we all do I mounted the scope on my test mule and headed out to do some glassing and shooting.

dsc_0540.jpg


I have to say that I was ( I am ) very impressed with the glass on the Cronus which is very bright and clear with no discernible CA. Optically the Cronus BTR really gives up nothing to my Razor II’s and – of the scopes I own – is only (slightly) bettered by my USO ER 5-25×60, ( a bit more) by my NF ATACR’s 5-25×56 and 7-35×56 and (quite clearly) by my S+B PM II’s but each of these are scopes that cost a LOT more money than what I paid for the Athlon. Compared to scopes in a more comparable price range I found the Cronus glass to be a bit better that my Steiner T5Xi and quite superior to my Bushnell DMR and DMR II’s. Of course – usual disclaimer – these are side-by-sides using my eyes not yours but I very much doubt that any Cronus BTR buyer is going to complain about this Japanese glass !

Since we are looking at a reasonably expensive scope I will be a bit picky about one thing – the sunshade doesn’t match the scope body. Yes, this is a minor quibble ( and one that is shared by my NF ATACR as it happens ) but cosmetics are important and to some they are very important.

dsc_0542.jpg


Of course, glass is only one part of the package – honestly, if glass was the only important thing we would all simply buy S+B PMII’s and be done with it – but in using the Cronus BTR on my test mule I found nothing not to like. As follows:


  • Magnification – an excellent and useable range and the mag ring moves with just the right amount of pressure ( and it has a high spot like a built-in mini throw lever )
  • dsc_0543.jpg
  • Turret markings – easy to read for my aging eyes.
  • Clicks – audible and a nice feel. Not too close together ( unlike my S+B for example ).
  • Side focus – a little stiff to operate but easy to get into focus.
  • Illumination – honestly, a feature I don’t really use but the Cronus BTR has 11 settings with a convenient off between each one.

Overall, I would like the turrets to be a little flatter ( and fatter ) and I don’t like them quite as much as my ATACR’s or Razor II’s but this is a very, very subjective thing and, by way of contrast, I happen to like the Cronus BTR turrets than those on the PST II, Burris XTR and, quite frankly, my USO ER and S+B PM II.

One thing that some may not like is that the turrets on the Cronus BTR don’t lock into place – I used to really like that feature but I’ve gone away from it now as I find sometimes when using my Razor II that I’ve forgotten they were locked – grrr. Likewise, the capped windage on my NF ATACR’s is ( at least to me ) a solution in search of a problem but YMMV so if these are important features to you … well, the Cronus BTR doesn’t have them. It does however have one feature which I – and many others – think really important – zero stop. This is where I found out how good the Athlon warranty is…

dsc_0541.jpg


The Cronus BTR Zero Stop (ZS) is accessed simply by removing the cap and then three small screws can be loosened to set the stop. Mmmm, somehow during this simple process one or all of the three couldn’t be loosened and so I couldn’t operate the ZS – a call to Scott was followed by a call from Jason at Athlon who, after I described the problem, immediately sent a new scope out to Scott and onward to me. Sweet, simply handled – and my return postage was covered ! This ‘problem’ – which may have even been my fault forgetting my clockwise from counter-clockwise – was absolutely a non-issue and I was looked after perfectly. This gives me immense comfort that Athlon is serious about after sales servicing of customers.

Overall, I find the Cronus BTR to be an excellent package that scores very highly on the “Value Per Dollar Spent” scale and it feels very much like a scope that performs at top-tier level without the top-tier price.

The Cronus BTR – A Value That Is Not Out Of Place Amongst Much More Expensive Glass
dsc_0551.jpg
 
Nice review.... But it seems like you have too many scopes... I will offer to verify your results if you would lend me a few.
 
When reviewing scopes designed for precision shooting, I like to see how precise the adjustments are.....like is 1 MOA really one MOA?
Just wondering if you checked this?
 
When reviewing scopes designed for precision shooting, I like to see how precise the adjustments are.....like is 1 MOA really one MOA?
Just wondering if you checked this?

Good question but I consider a scope priced above say $1500 that doesn't track or that doesn't adjust 1mil (or MOA) as marked to be a broken scope and I don't review broken equipment. So, yes - the Cronus I own tracks and adjusts accurately.
 
Good question but I consider a scope priced above say $1500 that doesn't track or that doesn't adjust 1mil (or MOA) as marked to be a broken scope and I don't review broken equipment. So, yes - the Cronus I own tracks and adjusts accurately.

Good to know, thank you.
 
Have you done the ladder test on the optic? Are all athlon optics made in japan? I've never heard of them until very recently, and couldn't find any history on them on their website.
 
Shot one earlier this week at 1000 yards with 6.5 creedmore. I was very impressed with it overall, and optically seemed as good as my NF NXS's.

We also used the illumination feature when we were shooting 1000 yards in total darkness - except for a small solar light illuminating the gong. Very crisp reticle, and I agree with the 'not too busy' reticle. Seemed pretty useful at that range.
 
I don't think all Athlon scopes are made in Japan - I read that the lower end ones are made in China.
The other question was about NF - both my ATACR scopes are superior and I no longer have a NXS to compare the Cronus to.
 
I have had a chance to play with the Athlon Cronus (older style) and Ares BTR. I wanted to test them before offering them as a dealer.

The Cronus are made in Japan... the Ares and the remainder of the Athon line up is made in China.

The Cronus offers excellent optics and tracking. Was out this morning in -8C but bright sunny day. Did a box test and it tracked bang on AND the adjustments matched the reticle. My sight in consisted of 1 shot, measuring how far off it was with the reticle, dialing and putting the 2nd over my POA.. Done. The rest of the adjustments were spot on and repeated in both windage and elevation. I repeated the box using a lower mag and it also put the bullets in the same spots.

Viewing the countryside, I had no issue resolving individual strands of wild grass at over 800yds. The stocks are about 1 to 2mm wide. Very impressive clarity, and resolution.

Side and eye focus work very well and it was easy to get clear image of both the reticle and target.

I tested the Ares BTR earlier in the week and was also impressed at the quality of optics and tracking at its price point. I know some will raise their nose that these are made in China but the scope will hold its own against anything in its price range.

Clarity and resolution are a step down from the Cronus but will meet/beat other scopes in its price range. Tracking was also spot on and again, adjustments matched the reticle.

I will do more indepth reviews once I get my own scopes but first impressions are very positive and I know shooters will be happy of the performance vs dollars spent.

As most know, I have been a Sightron dealer for years as it has also offered great value to the target shooter. However, they have been super slow to respond to the new trends in FFP, Xmas tree reticles, zero stop styles popular with PRS shooters. Here Athlon, fills that niche with alot of features for the money spent.

Service and support has been great with a lifetime no questions asked warranty.

There are other Euro based products making waves but have been shy to pursue as they have limited warranties and service on another continent.

Jerry
 
Thanks for the white up Tom, I find I'm becoming more keen to the optic world this year, the time has come to step-up my game plan for 2018.

In matter infact, I just started building my first out-door shooting testing facility in Alberta after doing some on-line research of optics tracking & resolutions. Of course the functioning features of optics will be included in the long test runs over a span of time.

That way each optic gets a fair test on different lighting sources out-doors, and the run of the mill over the year.
What might work in South America might not in the Arctic of Northern Canada.

I just completed my first MOA measuring board last night, the MILL unit is soon to follow.
That way I can track "all" optic scopes that I will run threw the paces over the year.
I encountered a few challanges yesterday on the first test run. "Which by the way," was a learning curve on its own. More ideas on information gathering, feild testing procedures, and some optic resolution chats for field test here in Western Canada.
That way we can start learning more "what is what" when people start reading reviews on line.
Lets call it the proven test models of "all" optics, it is hard to get the data us buyers need when the test data is not on the table. Who performed the tracking tests, "more" then 1 or 7 of them, where is this data to prove that its correct. Reviewers offer words and statements of clarity,,, what method and scale was used to measure this.
Just because the reviewers eyes are in so so conditions means that other people should be good to go.
What about the out door lighting conditions, what test platform was used to measure this, and again,,, wheres the data to back it up.

Hey, I realize a person can only do so much, but let's be honest here. If I was to offer or post a review on line, then I'd better have my ducks in a row.

How much so one might ask.

Here is one small test sample on the Internet of reviews,I hope readers take note in this so "all of us" benefit from here on in with "quality test proven recorded results," and even then it is still our job to do our own due diligence test on top of that.
For those of us that don't wear blinders, we could see this coming in this thread.
Younger folks now get a chance to see how these reviews really take place. And the reasons to test things out for our selves.

http://www.opticstalk.com/athlon-rifle-scopes_topic42523.html

Even the test by tucansam was not 100% by any means, but it brings to light that "all" of us need to shapen our sticks if we prove to "our selves" that our next pricey optic is truely working like the manufactor said it its tests.

So how do we test, test, test, record, then share a proper review. This is where it gets tricky my friends.
The answer to this is,,, our own long term test facility indoors and out.
This is just 1 of many self tests we can start with.
http://www.opticstalk.com/how-to-optically-check-a-rifle-scope_topic41811.html

We might choose to perform the Optical resolution test over a period of time in different lighting conditions.
Of course these test and reviews will continue over the years to follow.
It ensures that things are doing what they are supposed to do if we are planning on national match or competitive shooting at the highest levels.

Let's be honest,,, to some people $200 is alot of coin, purhaps $2000 is alot for the next person, this isnt saying that $4000 isn't pricey knowing that there are a few optic scopes above this threshold.

I'm back to my test facilities today with -20c temps, flat dim light conditions with light snow blowing from NN/W to SS/E with changing speeds of 4 to 32 kpr at 3000 ft elevation. Endless data to record in this part of the data entry log.

8 optic scopes to be tested over the year with normal to rigorous pounding to see how they stand up. Ho Hummmmm. More data entry I guess.

And the optic resolution, color and clarity chart test over the next year. This is on going week after week.
Many sets of eyes fill in this gap.
Can this optic scope pick out the shades of orange to off orange little lone the green and blues.
The full color spectrum let's say.

Yes, these are tests that feed reviews for those of us that are in the loop,,, and in todays world, it is our job to pull the next generation up to higher levels so they them selves can pass this along to their kids and the next generation.

I guess some people will agree with this different way I see things, purhaps folks just want to buy a optic and think it's going to do what the manufactors said its going to do.

But those of that are keen are going to find a way to test these theories to a T, that way when we step up to the shooting line, we know that this part of the details are sorted.

Again Tom, thank you for the thread as you keep us up to date over the years to follow on this optic. It will be your endless days and nights tracking your scope and sharing your data entry with us so we can get up to speed.

My color resolution friend is coming to my place at the end of the month to set things up for me.
Then test and data entry will get underway.

The lab I'm setting up will have it all.
25' to 5 miles.
Lots of wind and blues skies.
Of course some dam cold crappy weather to. Ha.
Then down to Southern Alberta to put these optics threw the paces.

I won't know till I get there I guess.

More wrong then right as I force my self to get up to speed in this category.

Don
 
Wow Don - I think you are WAY ahead if me: I just buy lots of gear, use it and compare what I see and feel to other gear that I own. I fear my testing and reviewing is much too subjective for someone like you whose work I look forward to seeing and which I figure will be much more valuable than mine. Pity you don't live closer as I'd be really happy to lend you stuff.
 
You've chosen a subject that is really important, and on the whole poorly covered by the shooting press. I appreciate its hard to describe the level of clarity of a scopes lens, but some form of uniform test / review is really needed.

Im looking forward to the observations already!

Candocad.
 
Yes I hear you Tom, I live in the Red Deer Alberta area, but I travel alot of the Western Canada's, and East once in a while.
My normal landing pad in BC is the North Shueswap and South to Oliver / Osoyoos British Columbia. LOL
Ok, all of BC.
Sight seeing, archery, and now shooting sports. This is not ruling out meeting people, relaxing and lots of bon-fires and BBQ's every night. It's all about the good times.

This testing stuff is "Hopefully" going to follow me around, all my ammo reloading is done on the road, WOW.
I can see that a 53' control station is just around the corner. Ha.

Any ways, this year has been my eye opener, and what a eye opener it is.

Getting schooled in shooting sports is one thing, but the areas out side of that alone play a major role in this.

If I don't sort things out before hand, then how do we know if things are really working out for us.
We can trust that they are,,, or we can prove 100% beyond a Reasonable Doubt that it is "Not real or is Real.

This is a whole topic on its own.

We are all lucky in todays age with the Internet and many other things, it seems that in order to utilize these tools, it" might" be wize to test and confirm that things are what they are.

I was not brought this way, the rule of thumb was buy what ever and use it. Everything I own fits this category. Purhaps most of us role with this idea depending on what we use.

But this Summer things changed, I got schooled in shooting, then schooled in reloading ammo,,, both areas I still need to get up to speed in.
And now optics.

Its turning out to be a life long passion that I wasn't planning on either,,, just happens to be the path I'm on I guess.

This idea is not just for me and 1 thing,,, it can be anyone of us and what ever category it is that we are on.

All of us in the shooting sports world know one thing,,, the "ALL" of it is a mile long and a inch deep in certain spots.
But there are spots that are a mile deep and a inch wide,,, these are the areas that we want to aline our selves with.

Of coures this is only for those that "choose" to that is.

Address the major areas first, don't chase the little things that benefit us in the greatest degree of getting tighter groups down range.

I'm not spending time chasing the rotation of the earth when I need to address things that will benefit me more.

I'm sure folks can see where this is going.

My friend built me a national Match F Class rifle this year.
It is 2 to 3 X's better at shooting then my skills.
This is sorted by 100%.
That leaves me time to work on reloading ammo quality, shooting forum, and wind wind wind.

This is where the optic thing comes into play.
Us shooters need to know if our optics are doing what they are suppose to do, the only way to know this is run them threw the mill.

When my rifle shoots tacks, I feel awesome,,, all of us would feel this same way...
If it's working, then it allows us to push these limits.

If we get really good at testing our gear and applying it, then all of us stand a chance of pushing the limits of Stan Payte, Mike Miller, Bryan Litz and so on.

If someone asked me 30 years ago if I could step up to the line on my mentor C Ganter in my home town,,, I'd a said no way dude.
LOL. And here I am today 37 later trying to push this line.

Sorry for the long post all, you to Tom, but it's worth sharing on a good thread like this if folks choose to push the limits of good reviews going forward.
I'm sure hoping to up my game plan in optics not because I want to,,, its because I have to.

If optics get sorted like my rifle, then that area allows me to work on other stuff that comes up.

The only way to sort this out is with testing equipment, data entry, and time.

Yes,,, not practical for most folks, but I'm not most folks. LOL.

I'll chat with you this summer if it works out Tom. I'll give you a few weeks heads up if your game to have coffee or go for a good time shooting range day.
I think the F Class folks have a few shoot at Kamloops this year.
I might catch 1 this year if it works out, after that is free time. Clay bank shoots in BC this spring.
Shooting features is a blast.
1000 to 1700 meters of glory. LOL.

Don
Coffee or what ever
 
Last edited:
Back
Top Bottom