Today reader Ian McKee, whose blog name is 45Bravo, describes his experience with breaking in the .22-caliber Air Venturi Avenge-X Tactical precharged pneumatic air rifle.
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Take it away, Ian
The velocity and shot count of the .22-caliber Air Venturi Avenge-X Tactical
by Ian McKee
This report covers:
- Avenge-X Tactical velocity
- Shooting fast
- Settling down
- 100 yards
- Avenge-X Tactical velocity
Today we will be looking at the velocity and shot count of the Air Venturi Avenge-X Tactical in .22 caliber. Unlike BB, who has to turn out five different blogs a week about five different topics, I have the luxury of spending more time with the guns I test than he does.
I have been shooting this gun for a while. When I get a new gun that I am going to keep, I clean the barrel and shoot at least a tin of pellets through the gun before I start tuning it. I do that for a few reasons. A tin of pellets could be 200, or some other number up to 500. Some guns settle within a few shots, while others take longer.
Doing this gives time for any residual oils left from assembly to burn off. It also allows the moving parts of the gun to break in and the surfaces to mate together and the regulator, if it has one, a chance to settle into where it was set from the factory.
It also gives you time to learn its eccentricities of the gun (if it has any) and you have a chance to learn how it performs as set from the factory. This gives you a baseline of the gun’s performance before you start turning screws.
Record the settings of the gun as it comes from the factory, the regulator pressure setting, the number of turns the hammer preload is set at and the transfer port setting if it has them. Then if your tuning efforts go awry, you have the factory settings to return to and start over.
And finally, this is your new gun that you bought to shoot. And shooting is FUN! So — have fun.
The temperatures here in Texas are falling, but the Avenge-X is a little hot. Out of the box it was shooting a little fast. With JSB 18.13-grain pellets the first 10 shots went out at 923f.p.s. for a high, and a low of 916 f.p.s. The average was 920, and the extreme spread was 7 f.p.s.
The JTS Dead Center 18.1-grain pellets seated hard into the chamber like they seem to do on a lot of guns, but gave a 10 shot average of 899 f.p.s., with a high of 902, and a low of 895, like the JSB pellets the extreme spread was only 7 f.p.s.
FX 18.13 pellets gave a low of 902 f.p.s., a high of 909 f.p.s., for an average of 905 f.p.s., and an extreme spread of 7 f.p.s. as well.
I think we can safely say that from the factory the regulator is very stable with 18.1-grain diabolo pellets.
For the last few months I have been using the FX Radar Pocket chronograph. I bought it used from a friend who upgraded to the new smaller and rechargeable one, but that is a topic we will cover in a later blog.
My first groups at 25 yards were so promising, I immediately went straight to 100 yard testing, skipping over 50 yards entirely.
Towards the end of the first 500 rounds, using the factory settings, I had tried several slugs and both heavier and lighter pellets. My shooting buddies were letting me test things they had on their ammo shelves. Some worked well and some did not.
The more I shot the Avenge-X, the higher the velocity slowly crept up until I was getting 958 fps with JSB 18.13s, and the worse my accuracy became beyond 25 yards. The regulator was still showing 2200 psi, but the extreme spread dropped to 2 fps across 10 shots.
The 25-yard groups were still pellet on pellet, but past 30-35 yards the pellets were spiraling, the slugs fared a little better, but still suffered the same fate.
I knew I was going to have to tune the rifle to a lower velocity. I dropped the regulator to 2000 psi, and it has now stabilized at about 880 f.p.s. with 18.1-grain JSB pellets. I will make small adjustments up or down from there.
I ran 100 shots through the radar, with a high of 879 f.p.s., low of 861 f.p.s., an average of 869 f.p.s. The extreme spread was 18 f.p.s.,with a standard deviation of 5.6 f.p.s.
I moved out to 100 yards/91.44 meters, and filled the gun to 300 bar (4351 psi) to run a full string until the gun fell off the regulator. I managed 129 shots with a high of 881 f.p.s., a low of 814 f.p.s., an average of 864 f.p.s., with an extreme spread of 67 f.p.s.
In the graph you can see a spike about shot 84, where I think it actually fell off the regulator, but it carried on until about shot 110, where the velocity started dropping like a rock.
While it’s not the best tune for the gun, it’s a good starting point.
Before anyone says anything about the 67 f.p.s. spread being high, look at the graph where the velocity started falling. If you take those shots out, the rifle got a total of 115 shots, the high was 881 f.p.s., the low was 856 f.p.s. with an average of 867 f.p.s., and an extreme spread of 25 f.p.s., and an SD of 6.2 f.p.s. The Air Venturi Avenge-X is definitely a shooter!
I will cover the lower power setting in a future blog, with both 18.1 grain pellets, and lighter offerings.
Unlike BB, I have not accumulated as large of a selection of pellets and slugs of varying styles and weights to test. To remedy that I have several different types and weights of pellets and slugs on order so stay tuned.
Shoot safe and have FUN!
Note from BB — Tomek, I didn’t plan it this way but today’s report is a perfect follow-on to yesterday’s report. That one was about the breal-in of powerful spring guns. Today is about powerful PCPs breaking in.