Slingshot rifle update.

Discussion in 'General Slingshot Discussions' started by P.Konrad, Oct 26, 2020.

  1. P.Konrad

    P.Konrad New Member

    17
    7
    3
    Greeting to Members of theslingshotforum.com,

    The rifle is performing exceptionally well. It have it zeroed in at sixteen yards. A ballistics profile has been generated with Hawke Chairgun pro for 8mm G100 grade steels balls.
    [​IMG]
    [​IMG]
    As you can see, this wonderful program generates a reticle to predict where the round shall fall at a given magnification.

    I have been advise by the manufacturers to use G100 grade steel balls otherwise the round will curve due to the Magnus effect.


    I have been able to hit a coke can at 46 yards (42 meters, 148 feet).
    Here is a picture of the pouch attachment technique and part of the bands I am using.
    [​IMG]

    This is a cuffed constrictor knot using 100% cotton builders chalk line with a S165 pouch from https://slingshooting.com/slingshot-pouch-die/.
    The Bands are 1.0mm Sheshou guru 46-19mm tapper. 161.5mm Band length total un-stretched untied
    682mm draw 500% elongation. 136.5mm active band length. 10mm flip clip, 15mm pouch tie in. Wings cut of at 1mm.

    Shooting a 8mm G100 grade steel ball at 109m/s 357.6fps (9.2fpe) (12.47 Joules) initial, 98.1m/s, 322fps (7.4fpe) (10.03 Joules) at 30 yards.
    My Scope is a Hawke VANTAGE 3-9x40 MIL DOT RETICLE Model: 14 121

    And finally something else which contributes to accuracy is the use of graphite infused wax on the laminated pouches I have made.
    The microfiber I use is from GZK laminated onto canvas
    https://gzkchina.onloon.net/detail?itemId=55f62d59621a46188df11f5b72cf76b8
    It is necessary to us a laminated pouch as the super-fiber has insufficient strength.
    These are super strong with virtually no stretch.
    [​IMG]
    You would not wish to use these with a hand slingshot as they feel nearly as smooth as chrome, however they help with a clean release for the rifle.
    Salutations P.Konrad
     
    Last edited: Oct 26, 2020
    JimRhodo likes this.
  2. P.Konrad

    P.Konrad New Member

    17
    7
    3
    Here is a picture of the Graphite infused wax I made. The ingredients are Paraffin candles plus Graphite powder. The next batch I may add some PTFE (Teflon) (WD-40 Anti Friction & PTFE Lubricant).
    [​IMG]
    The process of making the Dry Lubricant.

    Salutations Konrad.
     
    Bugar likes this.

  3. 9lives77

    9lives77 New Member

    1
    1
    3
    Wow. Very thorough and informative. I watched the Magnus effect video. I have learned something new and I thank you.
    Impressive numbers downrange as well.
     
    P.Konrad likes this.
  4. P.Konrad

    P.Konrad New Member

    17
    7
    3
    Thankyou 9lives77.
     
    Last edited: Nov 18, 2020
  5. JimRhodo

    JimRhodo Junior Member

    2,909
    186
    63
    I’m unlikely to use such a rifle but fascinating nonetheless. Gripped to the end of the link.
     
    P.Konrad likes this.
  6. P.Konrad

    P.Konrad New Member

    17
    7
    3
    Last edited: Nov 18, 2020