FX Wildcat 25 MKII performance before Huma

Forums PCP Airguns FX Wildcat 25 MKII performance before Huma

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    Bob_O
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    I took the WC out today and ran shot strings with 3 different pellets.

    JSB 25.4gr
    JSB 34gr
    JSB 34gr MKII

    Here are the results.  I’m not that familiar with these numbers, but they don’t appear that great.  Seems they should be more consistent.

    Input guys?   I have a Huma regulator on order.

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    Groundhog
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    First three shots in each string seem to be the slowest shots in each string . Did you refill to 230bar before each string ? Or the reg could be creeping up between strings maybe .

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    Bob_O
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    No, I filled at the start, fired three shots with no pellets, then proceeded to fire all three shot strings back to back…..down to 155 bar.

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    Eaglebeak
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    Without the first 2-4 shots, those figures aren’t to bad. If you hadn’t said that you dry fired it a few times, I would have thought, a classic case of reg. creep. You’ll just have to wait and see when the new one arrives.  

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    mag_de_mars
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    have you checked the hammer spring, maybe the tension on the spring is too hot
    try to reduce to the beginning the tension and load a bit every time when the speed stop to up.
    my friend have the same problem he solve with some work on the hst
     

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    Bob_O
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    No, I haven’t tried to adjust anything.

    I will wait until the Huma gets here and then do it all at the same time.  CHUCK has offered to guide me through the tuning.

    I mainly wanted to put these numbers out so I can have a comparison of “before and after”.

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    Bob_O
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    Looks like I’d better get things ready!  I just checked tracking and the Huma just arrived at the post office in New York, so it should get to me by the weekend! 🙂

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    BigTinBoat
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    Member

    My guess is the STOCK reg is creeping (just like my research has found for me). Look at the 9th shot each time, 8 shot mag right? That delay in reloading (or changing the mag) causes the 9th shot to be lower in velocity then the next shots. To me, this indicates the pressure in the plenum being higher.
    I could be wrong and this could be entirely ransom, but my WC did the same exact thing.

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    likkitysplyt
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    Member

    I don’t have the MKll Wildcat, just the original WC but I chronographed it when I first got it from Utah Airguns and it was shooting right at 895 to 900 fps with a spread of 12. It was a very accurate rifle … literally a hole on hole rifle.
    ​I have the gun in the shop at FXUSA right now getting them to check out the regulator, but I made a shot string just before sending it to Wilmington and this was the results shooting the 25.39 grain JSBs

    1 …783
    ​2 …822
    3 …844
    4 …841
    5 …856
    6 …842
    7 …847
    8 …852
    9 …839
    10 …846
    11 …839
    12 …832
    13 …839
    14 …835
    15 …862
    16 …868
    17 …861
    18 …866
    19 …856
    20 …843
    21 …850
    22 …850
    23 …853
    24 …857
    25 …857
    26 …849
    27 …860
    28 …873
    29 …858
    30 …858
    31 …849
    32 …870
    33 …872
    34 …869
    35 …855
    36 …856
    ​37 …864
    38 …858
    39 …862
    40 …864
    I threw out the first two shots because they were so far off when considering the extreme spread but the stats for the string with those two shots removed was
    ​Hi 873 / Lo 832 / Avg 854 / ES 41 / SD 10

    ​Out of all 38 shots that I counted there were 5 in the 830s, 8 in the 840s, 13 in the 850s, 9 in the 860s, 3 in the 870s.

    ​Still, for a gun that origionally had a es of 12 with the majority of the velocities between 900 and 895 and a real tack driver … to a gun where I have no real idea where it is going to hit within a 2.5 inch circle at 60 yards is not acceptable to me either for target practice or small game hunting.

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    BigTinBoat
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    “likkitysplyt”
    1 …783
    ​2 …822
    3 …844
    4 …841
    5 …856

     

    This is a classic example of what happens when a regulator experiences creep.

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    likkitysplyt
    Participant
    Member

    BTB … Yes it is and it doesn’t even resemble the kind of results I got from chronographing  the gun when it was new. 

    ​As it is I have no idea whether the next shot is gonna be coming out at 870 fps or 830 fps and when you add a little bit of distance to that equation, it throws your POI all over the place … I seldom take shots less than 60 yards. Gonna have Ernest do a tune to it while it is at FXUSA as well as replacing the regulator …  the gun is still under warranty.

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    guod123
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    looking at the shot string for the standard JSB 25’s that would suck if it was in a standard unregged Marauder. Getting that shot count, and that spread from a gun costing triple that then having to buy an after market regulator? I’ll stick with a Cricket.

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    Bob_O
    Participant
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    CHUCK,

    My regulator should be here by Monday.  I will have the Wildcat stripped down and ready!!

    🙂

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