A few big bore PCP projects

Forums Big Bores & Arrow Shooters A few big bore PCP projects

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    chasdicapua
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    That you can even build that is amazing to me. That it shoots so well is even more amazing. Very well done!

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    AZBOBCAT
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    Wingman I’m curious what the transfer port size is on your pistol. 

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    Wingman
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    8mm T/P on both the .30 and 9mm.
    Short barreled pistols need a very high flow valve with a short dwell time to get the pellets/bullets up to speed without waisting air. I have found a light hammer and large transfer ports/valve seats yeald the best efficiency and flattest shot strings in the short barrel pistols.
    The .30 pistol has a 6.5″ barrel and will send a 44gr JSB to over 900fps if you tune it for speed.

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    Nueces
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    A genius like this should be encouraged.  Hopefully all this is just your hobby whilst you rest up from saving the world.   Keep at it mate.

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    AZBOBCAT
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    Thanks wingman

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    Wingman
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    “Nueces”A genius like this should be encouraged.  Hopefully all this is just your hobby whilst you rest up from saving the world.   Keep at it mate.

    
Ha Ha thanks.. yip its a hobby for sure.. They say the difference between genius and madness is often measured only by success so I sure hope this one works out or Ill have no rest from saving the world :)

    A little more work on the breech tonight

     

     

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    kmd1984
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    You got skills bro.

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    ComplyHunter
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    Wow, you got an amazing mechanic skill. And now, we have a new Airgun Company named  Airborn Arm.
     

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    Wingman
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    A little more progress.. all be it slow.. 

     

     

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    Wingman
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    A few more progress pics:I have cut the breech in two and threaded in the barrel.
    Also have added a little more shape and  cut the rear step for the bolt.
      

      

      

      

      

       After turning the two parts down to the combined final length of the cylinder I went to work on some slots to expose the barrel that I then finished with a bullnose flute to pretty them up.I aim to anodize this pistol black and polish the outer barrel that will be exposed through the slots.  It was mostly cosmetic value but it has lightened the front up too.

      

      

      

      

      

      

      

      

    I had originally intended on only having open sights on this one but
    Ive also added a 3/8″ dovetail for the option of optics.

      

      

      

      

      

      
     

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    Gunnertrones
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    This is coming out damn good!!

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    Wingman
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    Added some dowels to locate the forward breech on and re cut and polished the barrel
    to a straight contour to show case it through the side ports.the forward breech will be
    locked in place with a muzzle tension nut. 

     

     

     

     
     A little fine tuning of the hammer over all weight and travel

     

     

      Here it is pre assembled with the .44 and .30cal to show how compact it is..
     11″ OAL Only a few more parts to make before its testing time..

      

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    Wingman
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    Still needs a little more polishing before the bead blast and matt black anodising but it is finally at testing/tuning stage.

       

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    gunsnknives
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    Damn fine work all around. The latest pistol seems to have quite a kick.

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    Marksman3006
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    Holy crap man………sick skills for sure.

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    Wingman
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    Cheers guys, I have to say after some trigger time I really like this little one…I put 160 odd shots through it tonight after fine tuning and sighting and it is so much fun! I have run a few 120gr-135gr cast hollow points though it but they are just a little heavy for any real usable ftlbs with this short little 5″ barrel and 40cc of air.  A custom 70ish gr HP mould could be in the works at some stage but it reals groups the 81gr JSBs well so have mainly been shooting those. I had intentions of modifying a .357 round ball or 90gr 9mm Makarov mould mould to a light weight hollow point as it needs a 70-90gr bullet to make the most of the power. I may even make a mould similar to the JSB pellets as it does seem to like them..  
     
       

     Here’s 4 shots at 50 meters on a 44 gallon drum lid while rested and tethered at 3000psi 

     

     

     

     

     

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    mcdonama
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    You, sir, have some incredible skills!  Impressed!

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    EXZIVER
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    Wingman you are awesome.  I wish you were my neighbor..  Wait.. no, I would not have any squirrels left to shoot!  :)  Excellent job Bud!

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    Wingman
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    I just gave the .30cal pistol a make over.. I have decided to leave it polished and not anodise
    it with the 9mm and .44 pistol so I gave it a matching polished grip frame and some walnut grips.
    Might have to fit it up with some silver optics too..

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    Bull_RUS
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    Done a great job!!!
    What equipment is used in the manufacture of: CNC turning and milling machines, hand tools or something more complicated? How long did it take to manufacture? There have been preliminary drawings?
    I apologize for my English. I am from Russia and have forgotten the language due to the lack of practice. Online translator helps)

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