by Tom Gaylord
Writing as B.B. Pelletier

Umarex Synergis underlever repeating gas piston rifle.

Part 1

This report covers:

  • Does it stop cocking after the last pellet is shot?
  • Velocity JSB Exact 8.44-grain domes
  • Firing cycle
  • H&N Baracuda Match with a 4.50mm head
  • Air Arms Falcons
  • Trigger pull
  • Cocking effort
  • Summary

Okay, spring-gun repeater fans, today is the day we get started testing the new Umarex Synergis. Let’s go!

Does it stop cocking after the last pellet is shot?

No, it doesn’t. After the last shot is fired it is possible to cock the rifle and fire it again without a pellet in the breech — dry-firing it. Does dry-firing damage the gun? Not as much as it used to, but it’s still not recommended. You don’t have to treat your dry-fired rifle like a hand grenade with the pin pulled, but neither is it something you want to do intentionally. So, what do you do?

You watch the clear magazine lid for the two dots — red and white — to align. When the magazine is loaded they are off by one chamber/pellet. The clear part of the magazine is pointed back toward the shooter, so, except for the scope mounts getting in the way, this is easy to do.

Synergis mag full
The magazine is loaded into the rifle. If the underlever is forward there is a pellet in the breech and the gun is ready to fire. Remember, the safety is manual. As you keep shooting the white dot moves counter-clockwise around the magazine.

Synergis mag 2 shots
The third-to-last shot has been fired and two shots remain. The white dot that moves is coming around to the red dot.

Synergis mag empty
The dots are aligned. It’s time to reload the magazine. If you cock and shoot when the mag looks like this you will fire the gun dry.

Velocity JSB Exact 8.44-grain domes

Umarex sent a tin of JSB Exact 8.44-grain domed pellets with the test rifle, so I assume they are among the best in the Synergis. Therefore I started the test with them. I shot two pellets without chronographing them to wake up the action, and then ten for the first string. Ten pellets averaged 886 f.p.s. The spread ranged from a low of 879 to a high of 892 f.p.s.That’s a difference of 13 f.p.s. which is great for a brand new rifle.

At the average velocity this pellet generates 14.72 foot-pounds at the muzzle. That’s enough for some hunting and pesting, so let’s hope the rifle is accurate.

Firing cycle

The Synergis is smooth for a gas piston gun, but there is a definite jolt when it fires. There is no slap to the cheek, so the bad vibration has been dealt with.

H&N Baracuda Match with a 4.50mm head

Next to be tested was the H&N Baracuda Match with a 4.50mm head. These domes weigh 10.65 grains and are accurate in a lot of air rifles. The Synergis put them out at an average 818 f.p.s. which generates 15.83 foot-pounds at the muzzle. Usually heavier pellets decrease in muzzle energy in spring-piston airguns, so the Synergis seems to like this one. The spread went from 801 to 823 f.p.s. — a difference of 22 f.p.s.

Air Arms Falcons

The last pellet I tested was the Falcon from Air Arms. At 7.33-grains it is the lightest pellet I tested. It averaged 951 f.p.s. at the muzzle, generating 14.72 foot-pounds. But the spread was 31 f.p.s., going from 941 to 972 f.p.s. The 972 was the first shot and after than the velocity never topped 954 f.p.s., so I’m thinking the Falcon isn’t as unstable as the numbers show. The first shot may just have burned a little more chamber oil than the rest, because at this power level all spring guns diesel.

Okay — the Synergis is a 14.5-16 foot-pound rifle. That’s a good place to be for a .177. But what about that non-adjustable trigger?

Trigger pull

I told you in Part One that the trigger pull was something to experience. Now I’ll get down to the number. How does the number two strike you — as in a 2-pound pull? And, the safety is manual!!! Why, it’s as if Umarex is going to trust us to manage our own safety issues. Maybe I should stop trimming the hedges with my lawnmower?

Yes — just two pounds! I was mentally and physically prepared for my trigger finger to winch a 500-pound weight down a rocky road with a broken Come-Along (American slang for a cable or strap hoist), but this trigger broke like it wanted to! Brother-in-law, Bob, you’re gonna like this one!

Will all Synergis triggers be this nice? Did Umarex set this one up just for me? Who knows? What I do know is it’s really good and that means that other Synergis triggers can be made just as good if they don’t start out that way. I’m not saying they don’t — just that there are no worries. Guys — this trigger is one the chatter forums will start advising people to buy, once they get guns of their own to test. Kowabunga!

Cocking effort

Okay — here we go. I mow my own lawn. It’s a postage stamp, and I mow it. Why do you care? Well, if you hire a service to mow your postage-stamp lawn then you probably don’t like lifting or pulling much of anything. So, when I say the Synergis cocks easy for a gas piston gun, that’s like saying I can run a mile in 8.5 minutes. That’s not terribly fast but there are some folks who drive to the mailbox at the end of their driveway. They will not be on the same sheet of music as me.

The Synergis I am testing cocks with exactly 30 pounds of effort. For a gas piston or gas spring, that is light! I remember when the cocking effort for gas springs hovered around 45-50 pounds and went up from there.


That’s it for this report. I have to say this Synergis is looking better at every turn. I sure hope it’s accurate, and, yes, I’m mounting the scope that came with it.