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One For The Fx Experts...

Discussion in 'Technical' started by shootgun, Jun 28, 2020.

Tags:
  1. shootgun

    shootgun Engaging Member

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    Okay gents... I took the plunge and ordered an FX Wildcat Sniper MK3 in .25 FAC.

    As you all probably know, this model is coming with rear power adjuster as well as the option to adjust the regulator pressure.

    My question is, how do you tune it for a specific pellet or slug? What i should be looking at?

    Many thanks!
     
  2. Spray1Mark

    Spray1Mark Major Poster

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    700mm barrel .25 cal? for .25 then a reg pressure of 140 is the sweet spot.

    Are you looking to shoot 25g Kings or MKII 34g?
     
  3. shootgun

    shootgun Engaging Member

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    Yes, 700mm Smooth Twist X Superior Liner barrel. I'm looking to shoot the 26 grain FX hybrid slugs mostly....
     
  4. Spray1Mark

    Spray1Mark Major Poster

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    Well not having owned a WC I presume there is no other HS adjustment than the wheel on the back?

    For slugs you might need to go to 150 on the reg, but I would start at 140 and just shoot groups and check velocity with each HS setting from low to max.

    The slugs tend to shoot better the faster you push them so you will probably find yourself max-ing it out anyways.
     
  5. shootgun

    shootgun Engaging Member

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    There are 7 preset power settings, plus the option to adjust the HS
     
  6. John Entwistle

    John Entwistle Busy Member

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    I’d watch Ernests video



    I understand it’s for an impact but the theory is the same it should help
     
    hmangphilly likes this.
  7. MartinJGUK

    MartinJGUK Keyboard Hero

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    There’s a hole in the wheel to adjust the hammer with an Allan key
     
    Reefmonkey and Spray1Mark like this.
  8. vdubber

    vdubber Busy Member

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    I went from a 600 to 700mm barrel in .25 (impact) and as a result gained an extra 60fps (from 900 to 960) at the same reg setting (140b) shooting the mk11's.

    I havent shot the hollow core fx slugs (just solid core NSA's) so this may not apply, but generally as slugs dont compress like diablos/ have more surface area in contact with the rifling they will shoot slower than an equivilant weight pellet, so you may be looking at 150b to make 950-980fps (if that is what you desire)

    Just a thought but not sure what size plenum the WC has? This will have a bearing on reg setting, especially on a .25 with 700mm barrel so you may end up going higher if plenum is on the small side....

    When testing/ setting up-

    Set reg pressure
    Slacken off hst screw
    Set hst wheel to max
    Adjust hst screw in whilst shooting (4 or 5 shots between adjustments as things need to settle) until you fail to see an increase in fps, if you have reached your desired fps at this point, back the screw off a touch and you should now be on/ near the knee of the curve in terms of reg setting vs hammer vs air consumption.

    If you havent reached desired fps (starting from 140b), increase reg 5b and start all over again...

    Not sure if the WC has a valve trsvel adjuster? If it does you can fine tune valve travel after this if you feel fps spread isnt tight enough, or you'd like to try and save a little air.

    Your going to eat air and slugs tuning, no real way around it other than trying a base tune with pellets first, but either way...enjoy, its all part of the fun!
     
    shootgun likes this.
  9. shootgun

    shootgun Engaging Member

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    @vdubber , sorry i have missed your post, very helpful, thank you!
     

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