Umarex Hammerli 850

[d3vnull]

Pulled out the 1st Gen Hammerli 850 CO2 rifle after a couple of years of sitting. These are a couple of targets my friends shot at 30 yards off of a fence post. There were better and worst targets, but these were pretty consistent. 8 shots each.

Scope is a 1 Gen back ATN 4K.

This one is from a friend learning how to shoot lefthanded because of left eye dominance.

 

[Kgphotos]

I’ve always thought those looked like nice rifles but I’ve never had the opportunity to shoot one.

 

[boscoebrea]

I have 2.mine are the RWS 850,mine are very accurate,I did a couple of the mods to make them better.
I think maybe 7 or so years ago they were pretty popular ,they got a lot of shots, while they should with that cannister.I put a muzzle break on mine to quiet them....I really liked them ,back in the day.

 

[marflow 777]

back in the day when The 850 Forum was up and running, everyone wanted to play with them, but it was on the early side of HPA
the early ones have LW barrels, and they can shoot and 30YDs should be in their wheelhouse
i have one in both calibers they have 15mm barrels so fitting a can on them is easy and they will be silent
there was a problem with some of the .22 they drilled the front sight screw hole too deep and it would put a dimple inside the barrel and they would not shoot
and if you are using 8/8 or 90 gr carts just stop and buy the 2x12gr adapters, years ago they were 100 buck but now they are 30 bucks or so
that was anyways the biggest complaint, dumping a new 88gr cart because the cart Oring would not seal the cart, the adapters can be full and removed

they are an overlook rifle in my view and if the trigger is modded they can be as good as most rifles out there in the 750fps range

 

[Rotorgoat]

Hi all. Sorry to ask a question that may have come up already. I have a Magnum 850 which I converted to PCP. I originally used an HK ARMY 13ci with 850 psi reg. I then bought a 1200psi reg to increase the power but it’s only shooting at about 360ft/sec so well down on the co2? Is there something I’m missing? I’ve changed the hammer spring for the dominator 1250 spring. Thanks in advance

 

[xsarfc9x]

Hammer spring may need to be shimmed. It might not have enough strike to fully open the valve.

Hi all. Sorry to ask a question that may have come up already. I have a Magnum 850 which I converted to PCP. I originally used an HK ARMY 13ci with 850 psi reg. I then bought a 1200psi reg to increase the power but it’s only shooting at about 360ft/sec so well down on the co2? Is there something I’m missing? I’ve changed the hammer spring for the dominator 1250 spring. Thanks in advance

 

[xsarfc9x]

This kit should fit as well. Id email them first though to verify.

Walther Dominator 1250 Power Upgrade Kit

Walther Dominator 1250 Power Upgrade Kit - You only need to purchase this kit if your airgun is the non fac version.

trajectron.com

 

[Rotorgoat]

This kit should fit as well. Id email them first though to verify.

Walther Dominator 1250 Power Upgrade Kit

Walther Dominator 1250 Power Upgrade Kit - You only need to purchase this kit if your airgun is the non fac version.

trajectron.com

I’ve purchased the kit so we shall see. Thanks again.

 

[xsarfc9x]

I’ve purchased the kit so we shall see. Thanks again.

You might also consider this..I tried to post it initially but took me a while to find.

Walther Rotex RM8 Tuning & Zubehör - Luftgewehr Kaniss

Tuning Zubehör für das Pressluftgewehr Rotex RM8.

www.luftgewehr-kaniss.de

 

[boscoebrea]

my 850 is accurate,it shoots easy 1/2" groups at 25+ yards, and gets a lot if shoots ,I have not shoot in a long time;your posts got me to make sure I shoot them today..177and .22.

 

[xsarfc9x]

I picked up a leaky Walther Rotek .22 for $100 last year and have been very happy with it. It's not gonna be a powerhouse due to the valving and TP but it loves Crosman Premiers at 50m so within its limits its awesome. Still need to sort the trigger out but had a few projects ahead of it.

I've had RWS 850 in .177 and .22 both were great shooters as well.

 

[d3vnull]

I have 3.

#1 converted to bulk co2 with a 1100 psi regulator to avoid valve lock in the Texas heat.

#2 converted to hpa with a 1500 psi regulator I bought already converted.

#3 the 850 m2 I have never fired.

All .177.