Bullet cal.25 for LW barrel air rifle und choked

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  • #489321
    enriquegarramiolarobles
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      Greetings.
          I made less of my very tight clumps of my pellets lime. 25. Thinking about my Hatsan BT65 and his LW cannon, and all the rifles that have mounted this cannon to improve. I wish I could use this bullet in my rifle.

      Sketch number two.
      With corrected measures (some were erroneous)> :(, some modifications and more dimensions.
      The next sketch I hope to draw in Autocad.

      bala20cal.2025_zpsuq1f6tno.jpg
       
      This bullet design I hope I can do it in 3D, to be tuned. I do not handle very well with technical drawing, so I apologize in advance. My job is brushes, brushes and colors. : D
          – The hollow tail efficiently harness airflow, and helps to adjust the weight of the bullet without using another different mold. Increasing or decreasing the size of the gap in the tail.
          – A minor friction in the grooves of the barrel – without letting the air escape by the sides –
        Will give you more speed and improve the spin increase, when necessary.
            Their suggestions are accepted.Especially those of Mr.Bob. :)

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    • #508336
      enriquegarramiolarobles
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        Hellow.
            Ya he hecho los deberes

        bf48qt.jpg

        #508337
        teemu
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          I’m not Bob but I think that because of thickness of hollow base is greater than diabolos it wont do job which  it should do because pressure is too low to enlarge that base… I have few hollow base molds and I’ve been shootting those bullets about + – 1000 J airgun 300 bar pressure and pressure is still too small. How about gas checked base or plain base ? or both?

          Here is Group buy which is quite similar bullet with out hollow base and it is running…. Sort of bevel base
          http://noebulletmolds.com/smf/index.php/topic,1897.0.html

          You could size it down for fit Your barrel…

          #508338
          enriquegarramiolarobles
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            Greetings.
                 All suggestions are welcome, thanks for your opinion.
            I thought of making the base of the hollow bullet not to take advantage of the expansion of the back of the bullet, but to be able to slightly change the weight of the bullet without modifying its form.To this it is necessary that the mold has the nose Of the bullet in the lead dump, and in the bottom a rod type Lyman.Usando the rod longer or shorter can be removed more or less weight to the bullet.And using the rod upside out a base also flat.Lo Which I am not sure is that you can make the mold with the base of the bullet down and nose up in the lead dump.

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