Sig kilo/ shooter app show different

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by fisherman983, Jul 21, 2018.

  1. fisherman983

    fisherman983 Well-Known Member

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    Just purchased a sig kilo, loaded up my gun profile and playing with it at the house and noticed that the kilo shows me a different drop in moa vs what shooter calls for when I plug in the same yardage.
    Double checked both profiles and they both have the same input Info.
    Wmata going on?
     
  2. Greyfox

    Greyfox Well-Known Member

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    At what ranges and cartridge are you experiencing these differences/could you provide more information about your inputs?
     
  3. fisherman983

    fisherman983 Well-Known Member

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    700ish, 909 and 1225
    Cartridge is 264 win mag
    Fps 3230
    140 vld hunting
    G7 drag form
    1.9 sight height
    100 yr zero range
    1in high

    Built my profile in shooter. Built same profile in my kestrel. Shooter and kestrel line up, always within .1 moa

    Got sig, built profile with same info, wanted to check to see if numbers matched up with other solvers. Ranged a few objects and it's off as much as .6 moa.
    Not sure how that could happen if all my inputs have been the exact same with all 3 solver profiles.
     
  4. codyadams

    codyadams Well-Known Member

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    Elevation? Pressure? Humidity? Wind? Temperature? All these aspects affect your elevation as well, your kilo is taking all these readings and calculating them in real time when you take your range, and factoring them in. and even if it is different, if your talking .6 MOA at 1225 yards, it takes VERY little change, even in just wind direction, to cause that much of a change at that range. I would check and double check everything, then go out and use it in the field and see if it is correct. That will be the important test.
     
    RockyMtnMT, Barrelnut and elkaholic like this.
  5. Hatrick

    Hatrick Well-Known Member

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    All your calculations will get you close. (Believe the bullet)
     
  6. Greyfox

    Greyfox Well-Known Member

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    Having observed this myself, I have done some comparisons between the Sig 2400, Shooter, Applied Ballistics, and my Gunwerks G7. Generally, I have found comparable output values for evaluation to as far as 1350 yards. This assumes that the wind inputs for all devices/calculators are set to “0” wind speed, and, the values for density/air pressure are the same. Setting the Wind value to “0” negates corrections for aerodynamic jump. Using this approach, algorithms appear give the same outputs. At times, differences in output may show up based on the Ballistic RF’s internal capability to determine atmospherics. Any difference in the atmospheric values will show differences in elevation output at the longer ranges. When differences show more often then not, the Sig 2400 is odd man out when compared to my Kestral and G7 RF. This could be my particular unit, but it seems to struggle at times, particularly at the extremes in my typical hunting conditions. The other difference is that the Sig 2400 and AB Ballistic calculators correct for aerodynamic jump. This feature effects outputs for elevation and wind drift. The only way to check the validity of these different values is to verify actual results at long range. I’m personally not yet sold on the the aerodynamic jump capability. These values can easily differ by .5MOA for elevation, and wind drift at the longer ranges. I find that my values outputted by my G7 and Shooter/Kestral are very accurate when verified at my typical hunting ranges to 1100 yards. At the longer distances I will apply my own mental adjustments for spin drift, and coreolis. The key is to verify your devise/method to the maximum range in use.
     
    Last edited: Jul 23, 2018
  7. fisherman983

    fisherman983 Well-Known Member

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    Just playing around last night was ranging the hill again at 1598 yds.. kestrel 5700 elite and sig kilo had a 3 moa difference.. I wont shoot quite that far but I need to play with it a lot more and get actual verified drops.. just nervous and dont want to trust my rangefinder and end up messing up a shot.
    Thanks for the info guys. This site is a huge help