Home » Rifle Scopes » FIELD TESTED: Maven CRS.1 Rifle Scope Review (3-12x40 SFP)

FIELD TESTED: Maven CRS.1 Rifle Scope Review (3-12x40 SFP)

This article contains affiliate links. We may earn a small commission if you purchase via these links.

It’s no small feat to launch a completely new line of rifle scopes. So, what gave Maven the confidence to do it?

Maven created the new line to fulfill the requests of hunters.

CRS1 Mounted on Ruger Rifle
CRS.1 Mounted to Ruger 10/22 - Image by Tina Fa'apoi (Own Work) for Target Tamers

The Maven CRS.1 is a hunting scope that is designed for set-it-and-forget-it application. The CSHR reticle is in the SFP with bold wire crosshairs and 5, 10, and 20 MOA holdovers at 12x magnification. For hunting game of all sizes and perhaps some long-range use, it is no doubt a hunter’s optic.

With plenty of hands-on field and range time with the CRS.1, the following is my experience with it and why I recommend it.

Quick Overview...

What We Like: C-series glass

What We Don’t Like: Clarity at 25 yards

Best Uses: Big Game Hunting, Small Game/Predator Hunting, Short to Mid-Range, Light to Heavy Caliber Rifles, Rimfire, AR15/AR10, SFP Reticle

  • Magnification: 3-12X
  • Objective Diameter: 40mm
  • Coatings: FMC
  • FOV: 34-8.5 ft/100 yds
  • Eye Relief: 3.2-2” (approx.)
  • Adjustments: 0.25 MOA
  • Dimensions: 12.44” L/14.2 oz

Our Verdict: The CRS.1 3-12x40 was designed to fill the gap between quality, affordability, and all-purpose use specifically for hunters. With form and function as the standard requirement for those in the field or the timber, little more is needed for most shots taken in the hunt.

Why Trust Me?

After hundreds of hours of hand-testing rifle scopes in the field and on the hunt, and thousands more hours researching, writing, photographing and creating videos about them, I feel I have earned the title of expert when it comes to optics!

Optics are not just my passion, but also my full-time job!

I get my hands on as many of the optics I test as possible (through buying, borrowing or begging!) and run them through their paces to make sure they will perform out in field.

Check out our optics testing process here.

Over a decade of experience big game hunting, predator hunting and SFP reticle has been integral in putting together this Maven CRS.1 review.

Who is the Maven CRS.1 3-12x40 Best Suited to?

YouTube video

The uncomplicated approach of the CRS.1 will attract the eyes and budgets of hunters. The SFP reticle with 4x zoom and fixed parallax makes for a straightforward, set-it-and-forget-it scope. The CRS.1 3-12x40 is best suited to hunters who appreciate foundational features with a trace of modernity.

It’s also worth mentioning that with its mid-range, C-series optical quality, it fills the gap of affordability that Maven’s riflescope lines were missing.

When high-end is out of the budget and is perhaps overkill for your needs, the CRS series steps in as the most appropriate option that doesn’t break the bank nor adds bells and whistles you don’t need.

How Does the Maven CRS.1 3-12x40 Perform?

Overall, the Maven CRS.1 is a solid and dependable scope for the hunt. It’s exceptionally straightforward to sight in with finger adjustable turrets and to hold over at a practical 12x magnification. With the riflescope bundle, rings are included to get to target shooting and hunting out of the box. In fact, it made my list of the best scopes for .22LR for hunting.

For range testing days, I mounted the CRS.1 3-12x40 to three different rifles: Ruger 10/22, AR-15, and S&W 270. Wind conditions were ridiculous, so I dialed for it with every rifle and every zero. Plenty of opportunities to test tracking were afforded.

CRS1 Mounted on S&W 270
CRS.1 Mounted to S&W 270 - Image by Tina Fa'apoi (Own Work) for Target Tamers

With the included rings, the CRS.1 had a perfect height to all my Picatinny rails on my bolt-action hunting rifles. On the rimfire, it was incredibly fun to plink steel with, but my favorite experience was on my favorite rifle, the .270.

It mounted beautifully even though I should have moved the rear ring further back between the turrets and eye bell. I also know that rifle well and consistent cheek welds allowed for an ideal position within the eyebox at 12x.

270 grouping
270 Grouping - Image by Tina Fa'apoi (Own Work) for Target Tamers

Unfortunately, the included rings were not high enough for the AR-15 as the objective bell didn’t clear the rail.

This was rectified with high rings, and I got to bore sighting at 25 yards and took it out to 100 yards with no further issues save for the wind.

High rings use to mount CRS.1 to AR15
High Rings Used to Mount CRS.1 to AR-15 - Image by Tina Fa'apoi (Own Work) for Target Tamers

Ultimately, the CRS.1 mounts compatibly as-is to various bolt actions with medium height rings to Pic rails. I found the fixed parallax to be a benefit since it was one less thing to think about in the field and those crosshairs didn’t float once. In short, it performed exactly as it was intended to – simply and accurately.

Features & Benefits

C-Series Glass

Optical quality should be of concern to hunters as magnification means nothing if detail can't be resolved. With that said, the CRS series lacks nothing in contrast, brightness, and resolution. It has the mid-range C-series glass well-known for its ED, better-than-its-price point performance.

I could discern no chromatic aberration during my testing although it’s possible to see it in the right conditions most likely in the higher powers. The edge-to-edge sharpness was impressive with only a minor degree of field curvature at the very edges of the FOV at max power.

With a light transmission rate of 88%, the perceivable brightness is on par with alternative high-end models. The diopter correction compensates for +/-2 and this was enough for my far-sighted vision to get a sharp view of the reticle.

Though the CRS.1 has high magnification over 10x, it does not have a side focus or adjustable objective. It is fixed at 100 yards.

CSHR SFP Reticle

The CRS series have a custom-tailored reticle that was based off the RS series SHR reticle. It is the CSHR reticle that is made of wire, is in the second focal plane, and features 5, 10, and 20 MOA holdover subtensions at max 12x magnification.

CSHR Reticle on the CRS.1 Scope
CSHR SFP Reticle - Image by Tina Fa'apoi (Own Work) for Target Tamers

Perhaps the large holdovers are not for everyone, but it does give some long-range potential for the hunter who may be presented with the circumstance of needing it. As can be determined, it’s not a scope that’s meant for constant dialing in. Sight it in, use a ballistic app to get the data, and confirm it.

I found the reticle to be highly visible in almost every terrain. The low 3x power was the best in thick timber. Though digiscoping introduces aberrations, crosshairs were bold, black and because of the brightness of the optics, it was a non-issue to use in lowlight conditions.

Tracking Accuracy

The CRS.1 has capped, tool-less turrets with 0.25 MOA clicks, 50 MOA total adjustment travel, and 18 MOA per revolution. Adjustments are audible enough for hunters and can be felt through gloves if dialing is needed. For a set-it-and-forget-it scope, it’s really only applicable to zeroing in.

Capped Turrets of the Maven CRS.1
Capped, Tool-less Turrets of the CRS.1 - Image by Tina Fa'apoi (Own Work) for Target Tamers

Though I tried to attempt showing its tracking ability over video footage, it’s easier to verbally relay that each ¼ MOA turret marking was accurate in visual reference and real-time application.

Though not mentioned in the manual, I did perform a zero reset by removing the two screws and reindexing the “0” for my final 100-yard zero.

Since you have a BDC reticle for holding over, it only makes sense to use a ballistic app to see what the holdover values will be for your setup. Maven recommends the Strelok app. It’s a comprehensive and exacting ballistic application but not the most user friendly. But if you’re holding over 10 or even 20 MOA, you’ll want to confirm it at the range. Though it tracks precisely, dialing in isn’t the goal with this scope.

Mounting Rings

Mounting the CRS.1 to a bolt-action rifle is simple and fast especially if the CRS.1 riflescope package is purchased. In this bundle deal, the riflescope comes with a set of Warne Maxima 1” Medium rings that have a horizontal split and fits to Picatinny rails.

Field mounting the CRS.1
Field Mounting the CRS.1 - Image by Tina Fa'apoi (Own Work) for Target Tamers

The rings are high quality and held well throughout the entire testing period to the range over multiple trips. The CRS.1 was moved between rifles and the included rings were an ideal mating with bolt-action hunting rifles.

On the AR/MSR rifle, it did not clear the rail but had good clearance with alternative high rings. The field-tested CRS.2 has a 44mm objective lens and bigger objective bell that barely cleared the rail with high rings. I would feel more comfortable with super high rings on that setup if I were to maintain a consistent weld. But you know your setup best.

Maven CRS.1 and CRS.2
Maven CRS.1 & CRS.2 Rifle Scopes - Image by Tina Fa'apoi (Own Work) for Target Tamers

Build Quality

The CRS.1 shaves off a lot of weight that alternative 3-12x40 scopes may have. It’s lightweight at 14.2 oz and is on the long side at 12.44”. It can be assumed that it’s made from aluminum and it is a fact that it’s made in Japan.

Made in Japan
Image by Tina Fa'apoi (Own Work) for Target Tamers

Both the CRS.1 and CRS.2 are waterproof to a depth of 3m and have been nitrogen-purged for fogproof benefits.

During the time I had with testing the CRS.1, the climate has been sporadic with freezing, snowy days to wind advisory conditions and then warm 70° plus temperatures. I was out and about with the CRS scope in all these conditions in various terrains from the forests to the open plains. It did not fail in any respect to temperature, terrain, and light conditions.

Power ring on the CRS.1 Scope
Image by Tina Fa'apoi (Own Work) for Target Tamers

The scope has a slick, smooth surface with what I will say as having no knurling on the turrets or magnification ring. However, the Maven-orange indicator fin on the power ring served more than acceptably to manipulate magnification.

The finish is a tad on the reflective side, but it hasn’t taken any real damage from the unintentional abuse it’s suffered during transport and use in the field.


Clarity at 25 Yards

The CRS.1 is fixed for parallax/focus at 100 yards, and at 25 yards at maximum 12x magnification, the clarity was marginally soft. Looking out beyond 50 yards, the optics performed sharply with no optical disadvantages regardless of the power range.

Popular Questions

Does the CRS.1 3-12x40 come with Rings?

Maven includes Warne Maxima 1” Medium rings with the CRS.1 3-12x40 in the CRS.1 riflescope bundle. The scope-only option does not include mounting rings in the box.

What is the Lens Size of the CRS.1 Scope?

The Maven CRS.1 comes with a Maven-branded scope coat but no flip-up caps. For these measurements, the objective outer diameter is 47.7mm while the eyepiece outer diameter is 41.1mm. The objective bell is threaded to take a sunshade that is purchased separately.
Maven CRS.1 Objective Bell

Does the Maven CRS.1 Need Tools?

The Maven CRS.1 riflescope does not require tools to adjust. The windage and elevation turrets are finger adjustable. Though tool-less, they are protected from unintentional adjustments with the caps secured.

What is the Maven CRS Warranty?

The CRS series of scopes is backed by Maven’s unconditional lifetime warranty. Though it may be an affordable series, Maven stands behind their products and the CRS.1 has the same warranty as the high-end RS scope series.
Maven CRS.1 Scope with Packaging


The CRS series of riflescopes is intended for hunters who recognize when ‘less’ can often mean ‘more’ when in the hunt.

Field Testing the Maven CRS.1 3-12x40 Scope
Image by Tina Fa'apoi (Own Work) for Target Tamers

Too many complex scope features increase user error especially when adrenaline is pumping and you’re under pressure to fill that tag. Conversely, a lack of precision features can mean the inability to acquire accuracy and reticle visibility when you need it most.

Fortunately, as unadorned as the Maven CRS.1 may seem, no compromises were made to quality materials and manufacturing. If you already know what you want out of a hunting riflescope, the CRS may fill those needs.

Further Reading

Photo of author

Tina Fa'apoi - Expert Optics Tester

Tina is a renowned expert in optics, having written hundreds of articles for Target Tamers over the past eight years and owning an extensive collection of optic's including binoculars, rifle scopes, red dots, spotting scopes and rangefinders. With years of experience in creating instructional videos and field-testing various optics, Tina brings a wealth of practical and theoretical knowledge to the field.

Never Miss a Thing!

Get Our Latest Guides & Field Tests Straight to Your Inbox

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

As Featured Footer Image