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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Big Game Info Ballistics calculator.
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<blockquote data-quote="klinkers" data-source="post: 62520" data-attributes="member: 3811"><p>The way I normally use the calculator is to zero the rifle the way I want and then shoot group at 200 and 300, unfortunately that's the length of my range. I record the conditions as closely as possible and the the impact point of the various groups. I then set the atmospheric parameters, the velocity from the chronograph, and the BC from the manufacturer if known. Then I play with BC values and Drag functions for pointy boattails till the model matches my range testing. If you have the equipment to gather data to calculate your BCs great, if not trial and error will get you there.</p></blockquote><p></p>
[QUOTE="klinkers, post: 62520, member: 3811"] The way I normally use the calculator is to zero the rifle the way I want and then shoot group at 200 and 300, unfortunately that's the length of my range. I record the conditions as closely as possible and the the impact point of the various groups. I then set the atmospheric parameters, the velocity from the chronograph, and the BC from the manufacturer if known. Then I play with BC values and Drag functions for pointy boattails till the model matches my range testing. If you have the equipment to gather data to calculate your BCs great, if not trial and error will get you there. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Big Game Info Ballistics calculator.
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