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Alpine DPT

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  • 2 Post By Ryan_Songhurst
  • 1 Post By GWH

Thread: Working our drop for rounds

  1. #1
    Join Date
    Dec 2015

    Working our drop for rounds

    What set up do you all use for figuring out you’re drop at ranges?



    Sent from my iPhone using Tapatalk

  2. #2
    Join Date
    Dec 2015

    Found this, looks like a tracking test but do you guys use the same principal? Massive bit of paper with 0cm to whatever and then shoot at each range to see the drop?

    Sent from my iPhone using Tapatalk

  3. #3
    Member Ryan_Songhurst's Avatar
    Join Date
    Sep 2015
    South Island
    Use a ballistic app and shoot at steel
    veitnamcam and dannyb like this.

  4. #4
    GWH is offline
    Join Date
    Jul 2012
    Napier, Hawkes Bay
    That'll work.

    I never do that tho. I simply enter all the relavant info into a ballistic app on my phone, enter the bc and an estimated velocity (if you don't have actual)

    That will give you the drop/dial up data for various distances which will be close.

    Then shoot said distances and note the actual correction you need to hit centre compared to what the ballistic solution was from the app.

    After shooting at 3 various distances then make adjustments to bc and velocity until the app solution matches your actual recorded data from shooting.

    This process is called ballistic trueing.
    TianBotha likes this.

  5. #5
    Hunter gatherer dannyb's Avatar
    Join Date
    May 2018
    Oxford, North Canterbury
    I used a ballistic app with my chrono speed and load specs then shot at 100yds and 200yds to confirm, you can fiddle the projectile specs if the app doesn't match your results.

  6. #6
    Member Marty Henry's Avatar
    Join Date
    Oct 2014
    I run a ballistic app but shoot a verification string keeping zero and measure. I can go out to 500 at home which is plenty. I do this for all new loads as ballistic apps arent entirely reliable.



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