The Air Venturi Avenger is one of the greatest budget platforms around. You can choose between any of these calibers to fit your needs, .177, .22, and .25. The stock options vary, consumers can choose from the following.
Tunable and Budget Friendly
- Original Black Synthetic
- Solid Wood
- Green Mountain Camo Laminate
- Red/Blue Laminate
- G2 Camo
- Black Synthetic Bullpup
In addition to those great options, the Avenger is tunable with an externally adjustable regulator and hammer spring. Tuning an airgun can provide an airgunner with the perfect tool for just about anything and also allows them to utilize specific pellets, maximizing their performance. Who doesn’t love that? Yes there are some who will stick to the out of the box results and that’s okay.
Out of the Box Results
Here’s what you’ll get out of the box when you receive a .25 caliber Avenger. Upon arrival the Air Venturi Avenger has a reg setting of 2,900 PSI, producing an average of 903 feet per second and 45 foot pounds of energy.
That kind of energy will be sufficient for small to medium game hunting and will suffice for some hard hitting plinking fun! Straight out of the box the Predator JSB Exact King 25.39 grain pellets performed beautifully! It’s not a bad decision if you get this and don’t want to tinker with it and get the best performance it has to offer. To each their own!
Must Haves For Tuning
If you are one that would like to tune the Avenger for a specific ammo here are some things you will need.
- A Chronograph – Pro-Chrono Deluxe, FX Outdoors True Ballistics, Athlon Optics RangeCraft Velocity Pro Radar Chrono
- A Plenteous Air Source – Air Venturi Wingman 98 Carbon Fiber Tank, JTS Portable Compressor, Air Venturi EVO-310 Compressor 4500
- Allen Wrenches and a Flathead Screwdriver or Fix It Sticks The Works
- Targets to Confirm Accuracy
- A Safe Shooting Space
Beginning the Process
To get the most efficient regulator setting we suggest you decrease the regulator pressure setting and for that you must degas the airgun. Before you proceed, point the airgun in a safe direction, clear the barrel, then engage the safety.
To degas the airgun use an allen wrench, and loosen the degassing screw located on the underside of the forearm. Do not remove the screw, just loosen it until you hear the air pressure release, allow it to sit until all the air has been evacuated. Don’t forget to tighten the degassing screw when finished.
Next step is to decrease the regulator pressure, for this you will need the flathead screw driver. Using your screwdriver turn the screw clockwise until it stops, then give it a quarter turn counter clockwise. If you are going for efficiency, maximum power with minimum air usage start low and work your way up.
At this time if you’ve tightened the degassing screw you can use your air source to pressurize your Avenger to 300 bar. To increase the regulator pressure use your flathead screwdriver to turn the screw counter clockwise one quarter turn at a time while monitoring the regulator gauge.
The Lowest Regulator Pressure Setting
The first test we did began at a reg setting 1,200 PSI and gave the hammer spring a quarter of a turn. The chronograph read 561 FPS and 18 FPE, obviously we haven’t reached our goal yet, and it is clear we’ve got a ways to go.
While monitoring the regulator pressure gauge we increased the pressure to 1,800 and gave the hammer spring a half turn. With those changes the results were getting closer to our goal with 831 FPS and 39 FPE, but we’re not there yet.
We want max energy using as little air as possible, that will increase the shot count but not diminishing the energy produced. After a few more adjustments we reached our goal matching the results out of the box but at a lower pressure setting.
Efficiency Reached!
With the regulator set at 2,200 PSI the velocity was 894 fps and the energy was 45 foot pounds. The next increase was to 2,300 giving us 898 fps and 45.5 foot pounds of energy, we’re almost there! The last adjustment was to 2,400 PSI and a total of two and a half turns of the hammer spring screw which produced the perfect results of 903 FPS and the same 46 foot pounds as in the beginning.
Efficiency! The same energy using 500 PSI less than originally used! To those who may be overwhelmed by this process, as long as you have the equipment necessary and follow instructions, you can accomplish your optimal tune in less than thirty minutes.
