Over 180 FPE with a Talon .257: New TalonTunes Super High Output (SHO) Valve!

Forums Big Bore Airguns Over 180 FPE with a Talon .257: New TalonTunes Super High Output (SHO) Valve!

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    UpNorthAirGunner
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    Member

    The new TalonTunes Super High Output (SHO) valve is s BEAST! I installed it on my AirForce Airguns .257 Project Alamo rifle with a 34 inch barrel (same length as the Texan) and 6.25 inch DonnyFL Ronin Suppressor on the end. Watch here:

     

    The top rifle in the photo is the .257 and the bottom photo is my TalonP TAC-25 with 12 inch barrel and 7 inch DonnyFL KOI suppressor on the end for scale of barrel length difference.

    I am getting these kind of shot strings in feet per second (FPS) with an 85 grain cast spitzer slug at 3600 PSI: 999 > 991 > 982 > 970 > 960!

    That is over 180 foot pounds of energy from a rifle that in its original stock Talon SS form is one Airforce's lowest powered rifles! Two thumbs up for this MOD! Check it out: https://talontunes.com/shop/super-high-output-valve-sho/

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    jwrabbit123
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    Member

    I have had an angled low profile valve from PCP tunes which gets 187FPE , with a 1.8 spring and a 112gram hammer spring

    Is this a mad dog stock like hunter supply sells ? I guess with this stock you do not need angled valve

     

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    davidsng
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    Member

    Wow! That is some serious power!  Crazy.  I see that flat trajectory would make a killer coyote gun!

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