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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic programs that dont agree
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<blockquote data-quote="Litehiker" data-source="post: 1721626" data-attributes="member: 54178"><p>Yep, there are lots of rifle ballistics programs out there. Some like the original Horus program, are not as accurate as others like the Allied Ballistics engine or Hornady's Four Degrees of Freedom (4DOF).</p><p></p><p>Generally the<u> less</u> a ballistics programs relies on strictly mathematical models and <u>more </u>on real world input the better the results will be. Applied Ballistics uses Doppler radar for real world info. 4DOF uses information on the angle of the bullet's axis in relation to the trajectory as well as Doppler radar information.</p><p></p><p>Adding your rifle's info, such as accurate average muzzle velocities for a specific load, rifling twist rate, etc., will give the best results. But the environmental factors at the time of firing, such as those measured by Kestrel's latest 5700 weather meter with the Applied Ballistics engine must also be part of the Final Firing Solution. Listing those many factors here is pointless. Look them up on the Kestrel site for a full explanation.</p><p></p><p>If ballistics programs don't agree it is most likely because one or both do not take into account enough REAL WORLD information in making their predictions.</p><p></p><p>The admonition to "true" your rifle's trajectory on the range with the ballistic engine predictions should never be ignored. There will always be slight variations from the prediction due to barrel manufacturing variations, among other things.</p><p></p><p>Eric B.</p></blockquote><p></p>
[QUOTE="Litehiker, post: 1721626, member: 54178"] Yep, there are lots of rifle ballistics programs out there. Some like the original Horus program, are not as accurate as others like the Allied Ballistics engine or Hornady's Four Degrees of Freedom (4DOF). Generally the[U] less[/U] a ballistics programs relies on strictly mathematical models and [U]more [/U]on real world input the better the results will be. Applied Ballistics uses Doppler radar for real world info. 4DOF uses information on the angle of the bullet's axis in relation to the trajectory as well as Doppler radar information. Adding your rifle's info, such as accurate average muzzle velocities for a specific load, rifling twist rate, etc., will give the best results. But the environmental factors at the time of firing, such as those measured by Kestrel's latest 5700 weather meter with the Applied Ballistics engine must also be part of the Final Firing Solution. Listing those many factors here is pointless. Look them up on the Kestrel site for a full explanation. If ballistics programs don't agree it is most likely because one or both do not take into account enough REAL WORLD information in making their predictions. The admonition to "true" your rifle's trajectory on the range with the ballistic engine predictions should never be ignored. There will always be slight variations from the prediction due to barrel manufacturing variations, among other things. Eric B. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistic programs that dont agree
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