FX Fx Maverick disappointed accuracy

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I feel FX barrels are a bit hit and miss.
When i got my Maverick sniper, it shot just fine if you stuck to the SUB12 setup it came in ( my country FAC country ) ( shot 13.43 gr monster redesign pellets at 575 FPS on hammer #7 which is full power, 90 BAR regulator setting from factory )

So trying to turn up the speed, well then it only shot well with one pellet.
I then changed to 700 mm Barrel ( STD one ) and dual hole transfer port and that parried with a +100 mm barrel tube extension and a home made carbon fiber shroud, and suddenly i was shooting just fine, both pellets and lighter slugs, all the way out to 130 M with a .177 rifle.
I then got the 700 MM heavy barrel, it too shoot fine but not anything heavier so was still stuck shooting 13 grain slugs, but it would also shoot pellets just fine.
But really head 2 head with the STD barrel and i would be hard pressed to tell which one was better.
There is a difference though, if you set up rifle with STD barrel, and then change to the heavy barrel, your speeds will be lower.

I have then lately restored the Maverick back to its original form with a new STD barrel, and wouldn’t you know this barrel will absolutely NOT shoot any weight slug, but it do seem to shoot several models of pellets just fine.
I will absolutely NOT get a heavy barrel in 600 mm, i am done with the Maverick but was hoping to pest with it shooting 10 gr JSB KO MK3 slugs, but that is not going to happen so pellets it is.

I am thinking FX need to reinvent their barrels,,,,,, and it seem they might do that.
 
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Try a few different pellet types and weights. Often a gun will like one type and absolutely refuse to shoot properly with another. It’s hard to say why but it happens. Take just the one gun out to the range. Try several different pellets, maybe 10 shots of each type. Shoot from a bench or other rest, not off hand. Eliminate as many variables as you can. The problem may show itself and then you know how to proceed.

Rick H.
 
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on a serious note.. i’ve noticed that the times i experience such inconsistencies, it’s because i’m either not in an optimal shooting mindset, i have a dirty barrel, there’s a leak, i’m shooting below reg pressure, or something is loose.
i consider it a catastrophic situation if my gun doesn’t shoot. i’ve never had a scope lose zero.. i’ve accidentally turned the knob and lost zero, but never had a scope fail me.
 
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Marc from France said:
Hi
I just bought an FX Maverick .22 and I'm doing some tests at short distances of 20 meters and my AA S200 CZ barrel makes much tighter groupings. I'm a little disappointed with my FX….i use jsb 15.89 in both with 850 fps for Fx and 790fps for the aa s200
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Can you return the Maverick and get your money back? Even if there is a re-stocking fee for returning it, you might be better off with a non-FX rifle that is known for reliably shooting well right out of the box.

stovepipe
 
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stovepipe said:
Can you return the Maverick and get your money back? Even if there is a re-stocking fee for returning it, you might be better off with a non-FX rifle that is known for reliably shooting well right out of the box.

stovepipe
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come on guys, this is not a serious comment. A lot of airguns have the potential to shoot amazing lasers. The Maverick is certainly part is this group. But as with all other airguns: you have to tune it properly, and you have to use a pellet or slug your barrel likes. The finest gun shoots like a lemon when badly tuned. The best tune shoots like a lemon with the wrong pellet.
So instead of giving these funny statements, real help would be of a better benefit to the OP.

As said by someone above: I'd use a heavier pellet as well. 18,1 gr for instance. Or I've had good results with JTS pellets as well. And I'd shoot them faster as well. Also, has the gun been properly tuned?
 
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OP may have checked out on us, but the point of higher end airguns is that they can shoot heavier pellets. If I only wanted 30 fpe, a AA S500 would be the choice.

The Maverick is powerful and with only 112 bar on the reg, it would throw the .22 MRD 25.4gr @ 940 fps. How low is the reg set to shoot 16gr @ 850 fps? I kinda think this is the issue, tune is not right, might need a lighter hammer etc.
 
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My second reg is at 110 bars I shot 16 gr on pw 4 on pw 7 im around 990 fps and have a 380 mm liner

IMG_0249.jpeg
 
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@Marc from France as indicated above by @Jay308 the regulator seems on the (very) high side for such a light pellet. If you want to shoot lighter pellets I'd turn it down. I don't think you current tune is balanced. Besides you're probably wasting a lot of air which disturbs the pellets when they leave the barrel.
I'd recommend to watch some youtube videos on how to tune the FX Maverick or Impact. You'll want to tune for the 'knee', which is just below the plateau you can reach with a certain pressure.
 
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Almost all .22 cal air rifles are most accurate with JSB 18.1 gr pellets shooting between 860 and 880 fps. Mavericks and Wildcats (same gun) have a reputation for fine accuracy. My .25 WC VP is exceptional. Clean your liner then check the barrel nut. Tighten no more than 1/4 turn after the nut contacts the liner by hand. My reg is set at 100 and the hammer wheel number 5. I’m getting 940 fps with 25.4 gr pellets.
 
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