Wildcat MKIII Sniper .25 – Performance & Accuracy (post-mods)

Forums PCP Airguns Wildcat MKIII Sniper .25 – Performance & Accuracy (post-mods)

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    JoeKool
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    Member

    Hello AirgunNation Peoples,

     

    Made a few changes to my new Wildcat Sniper MKIII in .25 caliber.  Added plenum extensions, a larger transfer port, and re-tuned it for max power @ a 135 bar regulator setting.

     

     


     

     

    Found that it has decent performance & accuracy with Air Arms & JSB pellets and also is getting on well with Nielsen Specialty Ammunition slugs.  The barrel liner is the FX STX Superior liner and is 700mm in length.

     

    The Wildcat MKIII is power adjustable via a hammer spring tension adjustment wheel equipped with seven (1 through 7) selectable repeatable power settings.  It also has a externally adjustable regulator which is accessed by removing the stock.

     


     

    Below are chronograph results of 5 individual pellets and slugs.  Done after modifications and with the 135 bar tune.  Velocities were shot from the MKIII over the chronograph on each HST wheel power setting (1 through 7) with each pellet or slug individually.  So 1, 2, 3, 4, 5, 6, and 7 results represent a different HST power setting.

     

     

     


     

    Any 1 through 7 HST power level can be selected and used at any time.  From the chronograph information above the foot pound energies range from (lowest) 34fpe to (highest) 66fpe.  These are the .25 caliber power settings that I find useful, but can all be raised or lowered with different regulator pressure set points and further HST fine tuning.

     

    Accuracy has proven to be acceptable for the distances that I commonly take shots at game or on pests.  65 yards and closer are the usual distances when hunting that quarry present themselves in the thick wooded and brush-filled areas of Texas and Louisiana.  It is reassuring that if presented with the opportunity the MKIII can confidently be used to take even further shots effectively.

     

    Five-shot groups @ 50 and 100 yards with five different variations of lead, after the completion of all modifications.  The Air Arms Diabolo Field 25.4 grain where shot on HST power level #3, and all other projectiles JSB King Heavy & Nielsen Specialty slugs were shot on HST power level #7.

     

    Wind conditions.

     

     

     

     


     

     


     


     

    Not bad…  What do you guys think?

     

    Joe

     

     

    • This topic was modified 3 weeks ago by JoeKool.
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    Yo
    Participant
    Member

    OH NO YOU DONT!!!  I DONT NEED A WC3 I DONT NEED A WC3 I DONT NEED A WC3… BUT YOU JUST DOG GONE DID IT!!! NOW MAYBE I DO… πŸ˜‰  Yo!

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    sonny
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    looks like it likes those 33.95s 

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    Chris1973
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    I think it likes all of them . Congratulations Joekool! Your groups are amazing !

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    harrymoreland
    Participant
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    Can you shoot some groups with 16.54  GTOs at setting 1.

    There is no pleasing some people😜

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    ackc1234
    Participant
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    Joe,

    What kind of shot count are you getting at the high power levels? Thanks

    Alex

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    mr.grimm
    Participant
    Member

    Freaking Awesome, can't wait till mine arrives. On preorder waiting on the next shipment. Hope mine shoots the slugs and pellets as well as yours. 

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    Aeromat209
    Participant
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    Looks Outstanding Joe !!!!

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    tigerhunter
    Participant
    Member

    That is amazing. I hope my .22 sniper can come close to those groups when it shows. I have zero patience still in my advanced years. Every day have to wait is like the day before Christmas when I was little. Some things I guess you never grow out of 

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    FunGun
    Participant
    Member

    You really should just sell the gun, otherwise life will never be the same for you…no other gun will do…you dont need that kind of disappointment in life…just get rid of it asap….sell it….cheap, it will make you feel better……DIBS!

    WOW!

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    FunGun
    Participant
    Member

    On a more serious note..you say post mods…did you do anything else to the gun besides the supported user adjustments?

    Dang nice shooting!

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    douger
    Participant
    Member

    my buddy just got the 25 cal sniper and ill say its very nice but what fx isn't really  

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    SeeOhTwo
    Participant
    Member

    Great review. Very thourough. Was this the pellet or slug liner? Sorry if I missed it.

    Glenn in Texas

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    Centercut
    Participant
    Member

    Nice shooting. Time for the EBR Target Challenge. We need more entries!  Thanks.

    https://www.airgunnation.com/topic/ebr-target-challenge/

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    Cranky1
    Participant
    Member

    Your making me want one in a 30, with 2 plenum extensions and huma port…. very nice shooting. The 100 yard groups are excellent, apparently the new liners are amazing. 

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    PeterPolska
    Participant
    Member

    Great post thank you.  What app / chrono did you use?  What app for the wind?  

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    tsmith
    Participant
    Member

    looks like you should just buy a bunch of 33.95’s and save your money on buying slugs.  my wildcat MK1 shoots the 33.95 jsb just like that.  best .25 cal pellet out there!

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    JoeKool
    Participant
    Member

    Yo

    OH NO YOU DONT!!!  I DONT NEED A WC3 I DONT NEED A WC3 I DONT NEED A WC3… BUT YOU JUST DOG GONE DID IT!!! NOW MAYBE I DO… πŸ˜‰  Yo!

    I like it!

     

     

    sonny

    looks like it likes those 33.95s 

     

    Yessir, they are the ammo mostly used.

     


     


     

     

     

    Chris1973

    I think it likes all of them . Congratulations Joekool! Your groups are amazing !

     

    You’re right it’s very versatile.  Liking the Wildcat Sniper MKIII’s ability to shoot the variety of pellet and slug weights with good power and accuracy.

     

     

    harrymoreland

    Can you shoot some groups with 16.54  GTOs at setting 1.

    There is no pleasing some people😜

     

    Don’t have any GTO’s in .25 caliber.  Got plenty GTO’s in .22 for my springers.  The lightest .25 caliber pellets I have are H&N Field Target Trophy around 20 grain.  
     

     

    ackc1234

    Joe,

    What kind of shot count are you getting at the high power levels? Thanks

    Alex

     

    Three 16 shot magazines totaling 48 shots per fill on HST power # 7.  230 bar down to 135 bar.  More shots on the lower power levels.

     

     

    mr.grimm

    Freaking Awesome, can't wait till mine arrives. On preorder waiting on the next shipment. Hope mine shoots the slugs and pellets as well as yours. 

    Aeromat209

    Looks Outstanding Joe !!!!

    tigerhunter

    That is amazing. I hope my .22 sniper can come close to those groups when it shows. I have zero patience still in my advanced years. Every day have to wait is like the day before Christmas when I was little. Some things I guess you never grow out of 

     

    Thanks guys, good luck!

     

     

    FunGun

    You really should just sell the gun, otherwise life will never be the same for you…no other gun will do…you dont need that kind of disappointment in life…just get rid of it asap….sell it….cheap, it will make you feel better……DIBS!

    WOW!

    FunGun

    On a more serious note..you say post mods…did you do anything else to the gun besides the supported user adjustments?

    Dang nice shooting!

     

     

    Nope she’s staying!  
     

    Modifications = Stacked plenum extensions, Huma-air dual transfer port.

     

     

    douger

    my buddy just got the 25 cal sniper and ill say its very nice but what fx isn't really  

     

    kool!

     

     

    SeeOhTwo

    Great review. Very thourough. Was this the pellet or slug liner? Sorry if I missed it.

    Glenn in Texas

     

    Thanks,

    FX Smooth Twist X Superior Liner in 700mm.

     

     

    Centercut

    Nice shooting. Time for the EBR Target Challenge. We need more entries!  Thanks.

    https://www.airgunnation.com/topic/ebr-target-challenge/

     

    Might look into that! πŸ‘πŸ½
     

     

    Cranky1

    Your making me want one in a 30, with 2 plenum extensions and huma port…. very nice shooting. The 100 yard groups are excellent, apparently the new liners are amazing. 

     

    Thanks Cranky1!

     

     

    PeterPolska

    Great post thank you.  What app / chrono did you use?  What app for the wind?  

     

    Caldwell Ballistic Precision Chronograph and the similarly named mobile app.

    The wind mobile app is called Wind Compass.

     

     

    tsmith

    looks like you should just buy a bunch of 33.95’s and save your money on buying slugs.  my wildcat MK1 shoots the 33.95 jsb just like that.  best .25 cal pellet out there!

     

    JSB King Heavy 33.95 and Nielsen Specialty 33.5 HP slugs will be the staple diet for this MKIII Sniper.  Well stocked up already on both!

     

     

     

    • This reply was modified 3 weeks ago by JoeKool.
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    Ranchibi
    Participant
    Member

    Joe, super mods, excellent power! You have yourself one heck of a shooter. Those NSA 33gr were taylormade for your WCiii!

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    JoeKool
    Participant
    Member

    Ranchibi

    Joe, super mods, excellent power! You have yourself one heck of a shooter. Those NSA 33gr were taylormade for your WCiii!

    Appreciate it Ranchibi!

     

    They perform,

     

    and pack a punch πŸ₯Š !

     


     

     

     

     

     

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