Hammerli 850 AirMagnum Review 2021 – CO2 Rifle with PCP Accuracy


Umarex might be Hammerli's new name, but Hammerli is still very popular.

The air rifle was designed to provide high-powered CO2 options for game hunters.

The name situation makes things a bit hard to follow, but know this –

In the US, the Hammerli 850 is known as Umarex. 

They’re one and the same. 

German company Umarex has a long history of expertise in the field of CO2 power.

(Read this article for more information on the top air rifle brands.

The Hammerli 850 AirMagnum was the first 12 ft/lb CO2 hunting gun that had been mass-produced and affordable.

It runs on liquid gas and is made of synthetic material. This makes it lightweight and economically viable.

r1 1 Hammerli 850 Review - A CO2 Rifle with PCP Accuracy

For those who want an accurate rifle with a true firearm feel, but can't afford it, the Hammerli 850 AirMagnum is the perfect solution.

Hammerli / RWS is well-known for their ability to stand behind their guns, no matter what they claim. And they deliver!

giphy Hammerli 850 Review - A CO2 Rifle with PCP Accuracy

Their warranty has been unsurpassed.

Umarex Hammerli 885 is another trusted name in this community.

Pest controllers love the Hammerli 850 AirMagnum.

(For more information about the best air rifles to shoot squirrels, check out this post.

Smooth blacked-steel barrel and generous bolt are included.

It’s a lot of fun to shoot with, so you will have a hard time putting it down.

Although the Hammerli 850 AirMagnum wood stock can be made synthetically, it is well-known as an all-weather stock.

The gun can be taken anywhere without worrying about its finish because it is made from durable polymer and has a Monte Carlo stock.

Hammerli 850 AirMagnum uses a 88 gram air source cartridge.

Which allows you to have 200 – 250 shots before you need to change the cartridge. 

Fiber-optic sights are included with the rifle to assist you in locating your target.

It is possible to mount a scope on an 11mm dovetail bar.

Based on the German quality, Umarex makes a dovetail–to-weaver mount. 

This rifle is great for plinking and recreational target shooting.

The wood stock is strong and reliable.

The Hammerli 850 AirMagnum looks like a firearm. It also works as a firearm when it comes to accuracy.

Hammerli 850 AirMagnum will give you the opportunity to shoot a military gun but you don't have the money. 

The Hammerli 850 AirMagnum is everything you could ever hope for in a CO2 repeater.

This post contains more information about 5 types of air rifles that you should know before purchasing.

The Cocking Effort and Trigger

You need to be able to think clearly and consciously about the trigger performance, or the cocking abilities

You don’t want something that fires off course too easily. 

The Hammerli 850 AirMagnum air rifle's trigger performance is unbeatable.

The HAM team performed the test to determine the trigger's capability, and the results were incredible.

Hammerli 850 features a cock on-opening bolt action.

You will be able to manage it very easily.

This means that Hammerli 850 is ideal for young shooters as well as less physically-strong adults. 

Even at a lower pull weight (just 1 lb), the rifle doesn't accidentally fire.

The Hammerli 850 AirMagnum air gun is therefore safe for use.

The trigger pull is smooth and consistent.

It is important to note that the rifle will not be able to be retrieved during shooting if it is snatched.

The Hammerli 850's bolt action works just like a firearm, which is quite amazing.

This is the main attraction that you have towards the rifle.

Hammerli 850 would be a great addition to your collection if you are a veteran or have an interest in real firearms.

As you close the stroke, the bolt will become a bit bulky and rough.

But, maybe with time as you use the rifle, it’ll become smoother.

There is nothing wrong with having an action like this — it’s just something you’ll get used to.


Hammerli 850 AirMagnum wood stock can be synthesized.

Umarex has made the gun to be used anytime, in any weather, and it’s beautiful in black – reminiscent of the military. 

(For more information on the in-depth comparison of synthetic and wood stock see this post.

Hammerli 850 is known for its German quality, as it is made from durable polymer.

It is ambidextrous with a raised cheek-piece on each side of the Monte Carlo Stock.

This rifle comes with an air-source cartridge weighing 88gms.

This is a very useful tool because you can have as many as 200 or 250 continuous shots before changing the cartridge.

Scope and Sight

The Hammerli 850 AirMagnum is equipped with fiber optic sights. Fiber optic sights are very common in airguns these days. 

These sights are adjustable and allow you to choose between a bright-red, hooded foresight or a rear sight that is adjustable.

You can also add green fiber optics on a sliding ramp — all you need is a screwdriver to make the change.

This post will provide more information about the various types of airgun sights available and which one you should choose.

Accuracy and speed

Umarex Hammerli AirMagnum 850 took into account your concerns regarding accuracy.

Because it is not able to fulfill the requirement for a minimum number shots per fill, the speed of a CO2 gas rifle cannot be compared with real guns.

The multi-shot ability and lack of recoil can be considered at a low price, with simple features and appearance.

r3 1 Hammerli 850 Review - A CO2 Rifle with PCP Accuracy

The Umarex Hammerli AirMagnum 850 has been tested by the HAM Team at 65° Fahrenheit. These are the results.

PelletMuzzle Velocity-AverageMuzzle Energy-AverageAccuracy
Gamo Raptor Platinum 9.7 Grain674 fps9.8 ft/lbsGOOD
H & N field target trophy green 14.66 grain668 fps9.9 ft/lbsGOOD 
RWS hobby 11.9 grains640 fps10.8 ft/lbsEXCEPTIONAL
Crosman premier HP 14.3 grain606 fps11.7 ft/lbsEXCELLENT
JSB Jumbo exact 14.35 grain610 fps11.9 ft/lbsBEST TESTED
H&N field target trophy 14.66 grain609 fps12.1 ft/lbsEXCELLENT
H&N Barracuda match 21.14 grain519 fps12.6 ft/lbsGOOD ONE FLYER

Because CO2-powered air guns are so temperature dependent, the muzzle velocity is a complex topic.

The CO2 pressure rises with increasing temperature.

Because the temperature is increasing by 2 degrees Fahrenheit, the muzzle velocity will also increase as CO2 levels rise.

PelletCalculated Muzzle Velocity at 67F-AverageMuzzle Velocity Calculated at 75 F.AverageCalculated Muzzle Velocity at 90F-Average
Gamo Raptor Platinum 9.7 Grain674 fps690 fps720 fps
H & N field target trophy green 14.66 grain668 fps684 fps714 fps
RWS hobby 11.9 grains640 fps656 fps686 fps
Crosman premier HP 14.3 grain606 fps622 fps652 fps
JSB Jumbo exact 14.35 grain610 fps626 fps656 fps
H&N field target trophy 14.66 grain609 fps625 fps655 fps
H&N barracuda match 21.14 grain519 fps535 fps565 fps

The result of increased muzzle velocity combined with an increase temperature is clearly shown in the table.

The growth is still limited and it is impossible to say that it will grow indefinitely.

At around 95 degrees Fahrenheit, there is increased pressure in the “valve lock”, and the muzzle velocity begins to fall very quickly.

It is therefore accurate to say that CO2-powered air rifles can shoot at a maximum temperature of 90 degrees Fahrenheit.

Manufacturers recommend that after heating your valve lock, it cool down.

This will reduce the pressure and allow you shoot again. 

JSB Jumbo Exact Pellets had the highest accuracy using the Hammerli 850.

This air rifle doesn't care about pellets, and it can shoot with great accuracy at a wide range. 

(Read this post for more information on accuracy with air rifles.

This German-made tack driver uses.22 caliber pellets to put through the same hole at 35 meters.

Click here to get the lowest price


The Umarex Hammerli 850 AirMagnum demonstrates high consistency.

With JSB jumbo pellets, the standard deviation was lowered to 4.2 FPS. 

The Hammerli 850 AirMagnum recorded a standard deviation of 8.7 FPS with GAMO platinum PBA Pellets.

This was its finest performance. 

The trigger pull's weight was very stable, and HAM found no variations. This is an exceptional and rare find.


Hammerli 850 AirMagnum CO2 rifle with silencer is a powerful rifle.

This isn't the end of the world as many shooters might think.

It’s worth noting that the HAM team expected the sound to be much louder because it is high power CO2,

So the noise still doesn’t meet the norm for this type of gun.

You cannot compare the Hammerli 850 AirMagnum air rifle with .22 LR firearms in terms of the noise of course – it’s much quieter, even in .177 caliber.

This air rifle is not quiet enough for shooters looking to have a quiet rifle. 

Shooting ability

Amazing results for Hammerli AirMagnum air rifle Hammerli 850 AirMagnum!

Hammerli 850 AirMagnum air rifles are so great.

It's easy to shoot because there isn't much heavy cocking and recoil.

It doesn’t take at all long to master. 

The rate-as-a-gun score for this gun is 4.1. This is exceptional.

The Hammerli 850 AirMagnum is easy to use and fast on the target.

The 16 joules Valve is the best for accuracy shooting.

The clip of the Hammerli 850 XT can be loaded very easily, but it is best to take the time to push all pellets down to the hole.

Make sure that the compressed pellet is properly seated by the O-ring that runs around your clip.

HAM had no misled the Hammerli 850 AirMagnum team during its examination.


The Hammerli 850 AirMagnum air gun is attractive in its design and color. It's ideal for backyard shooting, hunting, and competition shooting. 

giphy Hammerli 850 Review - A CO2 Rifle with PCP Accuracy

The Hammerli 850 AirMagnum combo is located within the forearm. The CO2 cylinder can be removed from the inside.

The Hammerli 850 AirMagnum air rifle's finish is impressive. It features:

  • Part of metal that has been well finished
  • Also, a black ambidextrous synthetic stock that is well-formed.

The Hammerli 850 AirMagnum woodstock version can be found in the US.

It might be available in Europe but we’re not sure about the price.

Outside the USA, Umarex Hammerli AirMagnums 850 can be expensive.

Outstanding Grip

Hammerli 850 AirMagnum wood stock comes with a black synthetic material stock. This stock gives you a pistol grip.

It has raised dots which will increase grip.

The cheek-piece and thick rubber butt-pad make it ideal for shooting from both ends.

r2 2 Hammerli 850 Review - A CO2 Rifle with PCP Accuracy


  • Rear fiber optics adjustable sight 
  • The rifled steel barrel and all-weather synthetic stock of the air rifle are both durable and eye-catching, just like the Umarex Hammerli 885 air magnum.
  • Hooded front fibre optic sight
  • As you buy, you would 3-9 * 40 mm of AO optic from the center point.
  • It is made of hardwood stock and has a sling mount
  • Speed can go up to 1100 fps.
  • This is the ideal choice for small hunting games
  • You will get a higher efficiency rate if you carefully read the instructions
  • Outstanding accuracy
  • It is easy to feel the shoulders when your over-length is at 41 inches
  • It is light in weight and synthetic.
  • Fantastic trigger
  • Easy to shoot
  • Accuracy with all tested pellets
  • Experience firearms at their best
  • Great CO2 bolt-action
  • Safety mode makes it safe to use with your family members
  • It doesn't emit CO2 even at low muzzle velocity. Therefore, it is safe to use with 


  • High-cost CO2
  • Poor open sight
  • Balky bolt action
  • It is a harder trigger, but it is adjustable


The Hammerli 850 AirMagnum is priced between $250 and $280

Being a CO2 air-rifle, this is a viable alternative for the shooters or hunters who are looking for a PCP rifle with minimal recoil and don’t want to buy a refill tank. 

The Hammerli 850 AirMagnum offers the best combination of accuracy and reliability and a real firearm feel at such a reasonable price.

HAM Rating

Trigger and cocking effort90%
Consistency 90%
Sight 20%
Shooting ability90%
Appearance 90%

The hard air magazine test results were satisfactory.

The Hammerli 850 AirMagnum is a favourite of the HAM Team.

It’s accurate and has an eight pellet clip and bolt action.

You can handle it very easily, and it doesn’t need tuning. It’s also very durable. 


  • Umarex USA (older name Hammerli), is the manufacturer.
  • Hammerli 850 AirMagnum kit -.22 caliber
  • Umarex Hammerli AirMagnum850xt has a velocity of 650 fps
  • Ammo type is pellets
  • Bolt-action: The Hammerli 85 co2 is
  • Barrel style is rifled
  • Firing mode is a repeater
  • The rifle weighs 5.65 lbs.
  • The 3-medium level of noise is
  • CO2 mechanism
  • Safety by automatic
  • Rear view with fiber option
  • Trigger pull 3 in Hammerli-850 AirMagnum accessories
  • Small game hunting/target shooting/piling
  • 1-year warranty
  • Doug wall was one of the testers
  • Model number 2251001
  • Serial number G038251
  • Price $250 – 280
  • 200 – 250 shots per cartridge
  • Rotary magazine with 8 shots that fires quickly 
  • Monte Carlo stock
  • Hammerli 850hPa adjustable trigger with Hammerli Accessories
  • Product dimensions 12 * 45.1 * 4.2 inches

Customer Reviews

Customers love the Umarex Hammerli-850 air magnum.

As people appreciate the rifle’s accuracy and the price, as well as the easy loading and changing of the magazine. 

The smooth trigger pull is also highly appreciated.

The rifle has received positive reviews from retired engineers and servicemen who purchased it. 

Reviews show that buyers of other guns or rifles were not satisfied with their purchases.

We encourage hunters to get the Umarex Hammerli 850 AirMagnum. 

The benefits will not be limited to hunters.

If you’re looking to have a good backyard shooting session, or even looking to teach someone how to handle a firearm, this is a great starting point. 

A user of the rifle also commented that the bottle O ring blows right after the fifth CO2 bottle.

This means that rifles should meet a certain standard of quality.

Additionally, since the Umarex Hammerli 850 AirMagnum is synthetic, it’s praised for being to light.

It’s easy on the shoulders so you can carry and fire it all day. 

The Umarex Hammerli 850 AirMagnum is generally well-received.

So it’s safe to assume that it has no chronic problems. 

Safety is also important because the Umarex Hammerli 850 AirMagnum offers accuracy and safety.

It's easy to use and safe.

It doesn't leak CO2 at lower pressures or temperatures.


Hammerli 85 is an affordable CO2 air rifle.

The Hammerli 850 AirMagnum meets all primary requirements of shooters.

Hammerli AirMagnum, a magazine fed bolt action rifle with accuracy and simplicity of use, is the right choice.

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