Date: 10/12/2018 15:50
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Hammerli 850 AirMagnum

4.5127 reviewsReview, article, latest buzz
Hammerli 850 AirMagnum.

RWS 850 AirMagnum Magazine.

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  • 0.177" (4.5mm)

    Caliber: 0.177" (4.5mm), Stock: Synthetic, Handle: Ambi, The fun never stops with this rifle! Ideal for plinking, shooting targets and spinners.

  • 0.22" (5.5mm)

1-year limited warranty

PY-913-1732

$319.99

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  • Description
  • Specifications
  • Customer reviews
  • Q & A: 25 answered questions
German quality and loaded with features, the Hammerli 850 AirMagnum is so much fun to shoot that you'll have a hard time putting it down.

Let's start with the all-weather stock. You can take this gun anywhere and not worry about a fragile finish, because it's made from a durable polymer. It's ambidextrous, too, with a raised cheekpiece on both sides of the Monte Carlo stock! This CO2 rifle uses an 88-gram AirSource cartridge, giving you up to 200 shots before you have to change cartridges. The fiber-optic sights will help you acquire your target, but feel free to mount a scope on the 11mm dovetail rail. (Umarex also makes a dovetail-to-Weaver mount; check the Accessories link below.) The checkering on the pistol grip and forearm will help you get a good grip while you plow shot after shot from this 8-shot repeater. This gun is everything you ever hoped for in a CO2 repeater!

We've recommended some pellets to help you get the most from this airgun. Check out the AMMO link. Remember to click on the ACCESSORIES link to get extra magazines and AirSource cartridges and to select appropriate scopes, mounts and other shooting gear.

Made by Umarex
youTube video
See manual

other products by Hammerli

Caliber0.177" (4.5mm)
Max Velocity760 fps
Loudness3-Medium
Barrel Length23.62"
Overall Length41.0"
Shot Capacity8
BarrelRifled
Front SightFiber Optic
Rear SightFiber Optic
Scopeable11mm dovetail
ButtplateVentilated rubber
Suggested forPlinking & target practice
Trigger Pull3.0 lbs
ActionBolt-action
SafetyAutomatic
PowerplantCO2
FunctionRepeater
Weight5.65 lbs
See manual

other products by Hammerli

Average Customer Review

4.5 (127 reviews)

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5.0 5.0

5.0 5.0

5.0 5.0

By Steve from USA on 2018-12-06
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0.00 ratings

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Things I liked: accurate, plenty of power for metal targets pt 20 yards.

Things I would have changed: an adapter for 12 0z co2 would be nice. the 88 oz are great but it is hard to shoot enough to put gun up empty. 88 oz is good for over 200 rounds.

 

3.0 3.0

5.0 5.0

5.0 5.0

By Charles from USA on 2018-11-09
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0.00 ratings

Things I liked: I am a hunter. Clearly, this is a repeater results in a more much productive hunt. Once I dialed in my scope to my choice of ammo, the gun is a beast!

Things I would have changed: My complaint is: I went to Amazon and purchased a bulk quantity of CO2 cylinders (JT brand). I screwed in the cylinder and it held for a second or two then blew out the o-ring (I lost the o-ring in the field). Nobody in America had the o-ring and I could not find anyone who could give me the specs on the replacement...it's a frickin' o-ring...I should be able to find it anywhere. I order three overpriced o-rings from the UK and installed one in my 850. Same thing happened. Tried a different o-ring: same thing. Umarex says don't use Air Venturi cylinders. I didn't. I used JT cylinders. Upon viewing the available cylinders available on-line it became apparent that there seems to be no quality control in your air cylinders. Here is a comm. I sent to JT, Umarex and Pyramid: "Johnny, Here is a photo of the two different versions of your product I found on line. The first one clearly has a shorter nipple where the cylinder marries with the o-ring. The second has a longer nipple (this is the version I have and is not compatible with my Umarex Hammerli AirMagnum 850). The first one clearly has 15-16 threads and the second has maybe 10-12 threads. They ARE different, but packaged as the same. This is becoming very frustrating...What is the deal?

What others should know: Awesome pellet gun! However, the gun seems to be finicky when it comes to the co2 cylinders you select. Apparently, either sellers are not aware of this or they don't want you to know there is an issue.

5.0 5.0

5.0 5.0

5.0 5.0

By Alex from USA on 2018-09-04
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4.02 ratings

Things I liked: + Bolt action 8-shot repeater! + Bolt action 8-shot repeater! + Bolt action 8-shot repeater! + Comes with 2 magazines (I honestly see no reason to get more) + Lightweight & Durable synthetic stock + Requires no special holds or techniques to shoot + 11mm dovetail optics rail (I recommend UTG/Leapers scopes), you can also completely remove the front and rear sight assemblies. + Extremely easy to maintain and service, I recommend a silicone-impregnated gun sock @ Walmart for $15 for storage, especially long-term. + Adjustable lightweight trigger + Dead accurate; from benchrest I shot less than half-inch groups @ 25 yards (.177cal).

Things I would have changed: - ASA (brass thing you screw the tank in to) o-ring has a tendency to go bad after about 300 shots causing the CO2 to leak out. Just take out the o-ring and drive to your local hardware store, problem solved, 10mins & $0.50 per o-ring (buy a couple). Re-oil it at least once every 500 shots (if it lasts that long). - The obvious downside is that it runs only CO2, which practically limits the gun to summer-time shooting only. For most shooters, this is not a problem, but for winter-time hunters this is a major drawback compared to PCPs; 850 will suffer performance loss as the CO2 cools. I have not tried winter-time shooting, but I only shoot paper targets and cans. - The gun does not come with any degassing device or mechanism built into it. Once attached, unscrewing a CO2 bottle will cost you the entire rest of the bottle. You can however purchase a device for 88g's that you screw on top and acts as an on/off seal to preserve bottles.

What others should know: Recently started shooting my .177 850 again, had the thing since 2011 but put less than 1000 rounds through it. Six years later I take it out, replace the ASA o-ring, and I've had no problems with it at all. Decided, since its well out of warranty at 6 years old, to take it apart completely and clean & regrease/oil it. Internals are not crazy-complex but there are a few small parts (depends how in-depth you go really, ie dont take apart the bolt assembly theres no need). YouTube 850 air magnum disassembly. Barrel has a tendency to rust but this is completely normal for blued steel (very common on firearms and pellet rifles), like I said above just a little bit of RemOil and a paper towel/tarry cloth will do the trick, steel wool if its really bad. Buy CO2 tanks at Walmart, and o-rings for the ASA at your local hardware store or Home Depot/Lowes. Do not store it with a CO2 tank attached for more than a day or two. That's how you damage components, specifically o-rings.

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  • Charles from USA asked:

    I asked the question below and it was suggested I call Umerex. I did and they said the Air Venturi bottles are not compatible. Sure enough, all 88/90 gram CO2 cylinders are not created equal. Some have a longer nipple (Air Venturi)than others. The longer nipple prevents proper seating against the O-ring. Has anyone else experienced this? Q. - The o-ring in my 850 failed to hold pressure so I ordered three new ones from Umerex. While screwing in a cylinder the new o-ring blows a second or two after the cylinder in punctured. I tried several times with another new o-ring with the same result. wtf?

    • Tyler from USA:

      I have seen it before with the Sig MPX/MCX, some guns seem less prone to have issues with the varied 88/90 gram cylinders than others.

  • Charles from USA asked:

    The o-ring in my 850 failed to hold pressure so I ordered three new ones from Umerex. While screwing in a cylinder the new o-ring blows a second or two after the cylinder in punctured. I tried several times with another new o-ring with the same result. wtf?

    • Tyler from USA:

      I would contact Umarex about that. Does the o-ring hold pressure for a few seconds and then blow out? Or does it start leaking immediately when the cylinder is pierced?

  • John from USA asked:

    Can you use an 1100 psi regulated high pressure air tank instead of the Airsource Co2 tank? I imagine you'd need an airsource to paintball thread adapter-are they available?

    • Tyler from USA:

      Folks have modified the stocks to accept the 13 cu in tanks, so it can be done. But at that point, you're getting to a point where you're putting a good amount of money into a gun that you could get the same features out of as the Umarex Gauntlet.

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Item Description

RWS-2251000 [PY-913-1732]
The fun never stops with this rifle! Ideal for plinking, shooting targets and spinners.
Caliber0.177" (4.5mm)
Max Velocity760 fps
StockSynthetic
GripAmbi
ColorBlack

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