3080 Yards Shooting! Which App got Closer To Real Dope?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Eaglet, Nov 21, 2013.

  1. Eaglet

    Eaglet Well-Known Member

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    ColdBore 1.0 comes in 3 editions, which is a platform wide offering that neither AB or Horus can match, since it’s available for the PC, PDA and Windows Phone platforms.

    In terms of features, nothing comes close to what the software offers, neither AB nor any other package on the market, as can be verified jus by checking the respective vendor’s websites.

    And for pure ELR work, the predictive accuracy of our CB1 Ballistics Engine is unmatched too.

    For anyone interested, please check this link.

    http://www.dtacomlink.com/dta-dtm-30...i-375-cheytac/

    On next link check post #37

    DTA 3000M + Long Range Shoot This Thursday!

    Included are the test conditions, prediction error and overall performance. A long thread was posted in Sniper’s Hide by Lowlight regarding this test.

    Sight-In Conditions

    Baro Pressure = 24.76
    Temp = 23ºF
    Humidity = 53%
    Alt = 4639 Feet

    Field Conditions

    Baro Pressure = 30.30
    Temp = 15ºF
    Humidity = 46%
    Alt = 4639 Feet

    Ballistics Parameters

    MV = 3118 fps
    BC – G1 = 0.890 (DTM data)
    BC – G7 = 0.433 (calculated, not published data)
    DC = 0.500 (ColdBore 1.0)
    Click Setting = 0.102 MRAD (ColdBore 1.0)
    BW = 352 gr
    ZR = 100 yards
    SH = 2.0 Inches
    WD = 150º
    WV= 6.0 Mph
    Lat = 40ºN (aprox)
    Az = 001º

    Litz’s program does not use BARO, so the STAT pressure was set at 25.55, yielding an Air Density of 0.07133 lb/ft³ which is the exactly the same as for using a BARO pressure.

    Ballistics Predictions as yielded by 4 different programs

    CB1 = 40.7 MRAD
    Litz – G1 = 37.3 MRAD
    Litz – G7 = 39.7 MRAD
    JBM – G1 = 37.1 MRAD
    JBM – G7 = 39.5 MRAD
    FFS = 39.6 MRAD

    From the DTA HTI test the following value is considered the TRUE adjustment to hit the target.
    Elevation Adjustment Required at 3080 yards (2816 meters): 40.8 MILS

    So at that range 1.0 MRAD =>> 3.08 yards = 2.816 meters = 110.88 inches = 9.23 feet

    Now, the LINEAR ERROR for the different predictions are as follows :

    CB1 = 40.8 - 40.7 = 0.1 MRAD =>> 0.28 meters = 11.08 inches = 28.1 cm

    Litz - G1 = 40.8 - 37.3 = 3.5 MRAD =>> 9.86 meters = 388.03 inches = 985.6 cm
    Litz - G7 = 40.8 - 39.7 = 1.1 MRAD =>> 3.10 meters = 121.95 inches = 309.8 cm

    JBM - G1 = 40.8 - 37.1 = 3.7 MRAD =>> 10.42 meters = 410.24 inches = 1042.0 cm
    JBM - G7 = 40.8 - 39.5 = 1.3 MRAD =>> 3.66 meters = 144.1inches = 366.0 cm

    FFS = 40.8 - 39.6 = 1.2 MRAD =>> 3.38 meters = 133.08 inches = 338.0 cm


    NOW MOST OF YOU WOULD KNOW WHY, NOT BEING AFFILIATED IN ANY WAY TO Patagonia Ballistics, I use COLDBORE 1.0
     
  2. CA48

    CA48 Well-Known Member

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    Very interesting could be just what I need. Do you know if they have this as an APP for an I phone? Or can it only be had on a windows phone?
     
  3. Eaglet

    Eaglet Well-Known Member

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  4. MMERSS

    MMERSS Well-Known Member

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    I use Patagonia's ColdBore1 in the field on the Dell Axim 51v and love it .
     
  5. CA48

    CA48 Well-Known Member

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  6. Eaglet

    Eaglet Well-Known Member

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    You can find great prices on use Dell Axim X51V, X50V.... I have to X50v's and one
    X51V. They work great!
     
  7. Eaglet

    Eaglet Well-Known Member

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    MMERSS,

    Good man! If you were ever to get a Window Phone 8 mobile phone you could freely install the ColdBore 1.0 phone version which seems to be awesome... I still have to
    get to do that!
     
  8. CA48

    CA48 Well-Known Member

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    Thanks, I will look into them.
     
  9. brian b

    brian b Well-Known Member

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    Eaglet,
    If you had posted 2560 Yards Shooting! it would be more believable, that is where they state the bullet goes sub-sonic.
    Have been shooting long range for more than a decade and the only absolute is that once a bullet goes from super sonic to trans sonic to sub sonic the results are not ABSOLUTE.
     
  10. MMERSS

    MMERSS Well-Known Member

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    Biran b,

    You are correct. I will continue to use CB1 without the absolutes.
     
  11. Eaglet

    Eaglet Well-Known Member

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    The original posts by DTA and the comparison made in SH, never stated any reference to absolute values, because all systems have inherent dispersion, as we all know.

    However, a prediction is absolute by its very self definition, since dispersion is not accounted for, unless a Monte Carlo type simulation is performed against the input/output data.

    What counts here is the size of the error taking the field data as the absolute reference, since as said before, we as shooters cannot control the other parameters.

    Moreover, the interest thing about the test was precisely the fact the shots and the predictions were in the subsonic region!
     
  12. LittleLebowski

    LittleLebowski Member

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    Advertising.
     
  13. CA48

    CA48 Well-Known Member

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    Really! Eaglet states at the bottom of his first post that he is in no way affiliated with Patagonia ballistics.

    He is simply informing shooters about a new ELR product.
     
  14. Eaglet

    Eaglet Well-Known Member

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    Gentlemen,

    What can I say?

    You may believe whatever you like, it surely makes no difference to me.

    Respectfully,

    Eaglet