Benjamin Bulldog 290fpe Beast Mode

Forums Big Bores & Arrow Shooters Benjamin Bulldog 290fpe Beast Mode

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    thammer
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    Bulldog Beast Mode

    290fpe 3 shots 16fps extreme spread. 

    145gr Noslers ran 948, 960, 944 fps

    Opened up the transfer port size to 5/16", Reshaped the poppet head and removed the return spring.  Shortened the factory hammer spring to 2.4", added a 10.5 gram brass hammer weight .400" in height and put a gauntlet spring inside the factory spring.  Filled the guns upgraded airtube to 3650psi and fired 3 shots with Benjamin Nosler 145gr slugs.

     

    Do not fill a factory air tube beyond 3000psi.

     

     

    • This topic was modified 2 days ago by thammer.
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    Fasyankee
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    Stock reservoir?  Any other details on the build?  Any other non-stock modifications?

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    thammer
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    Fasyankee

    Stock reservoir?  Any other details on the build?  Any other non-stock modifications?

    Upgraded reservoir everything else is listed in the details. 

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    T3PRanch
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    For the newer shooters that read this thread …. DO NOT fill the factory air reservoir beyond 3K PSI!

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    zephlin
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    Has anyone tried the all copper controlled fracturing bullet by Lehigh Defense? It's fits the stock magazine and is my first purchase after I order a Pitbull. lehighdefense.com/all/357cal-38cal-105gr-controlled-fracturing-bullet

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