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The Range
Rifle & Shotgun Discussion
Match ammo ballistics
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<blockquote data-quote="Jcann" data-source="post: 3527477" data-attributes="member: 33119"><p>Like [USER=15054]@swampratt[/USER] said. Gather your amount of drop from a target (100, 200, 300, 350, 400, .....) with a 100 yard zero. Shoot at the same spot at all ranges. From the amount of drop from these different ranges you tune your muzzle velocity in your ballistic app to correspond with the data collected from your target. Don’t concern yourself too much with the wind or horizontal stringing; you’re looking at differences in elevation. Hopefully you’re a moa or better shooter. </p><p></p><p>I believe the bullet Winchester is using is the 69gr Sierra Matchking which has a G7 ballistic coefficient of 0.165 (taken from Applied Ballistic App); Note, generally when using boattail bullets use a G7 BC. A G1 BC is used for flat based bullets.</p></blockquote><p></p>
[QUOTE="Jcann, post: 3527477, member: 33119"] Like [USER=15054]@swampratt[/USER] said. Gather your amount of drop from a target (100, 200, 300, 350, 400, .....) with a 100 yard zero. Shoot at the same spot at all ranges. From the amount of drop from these different ranges you tune your muzzle velocity in your ballistic app to correspond with the data collected from your target. Don’t concern yourself too much with the wind or horizontal stringing; you’re looking at differences in elevation. Hopefully you’re a moa or better shooter. I believe the bullet Winchester is using is the 69gr Sierra Matchking which has a G7 ballistic coefficient of 0.165 (taken from Applied Ballistic App); Note, generally when using boattail bullets use a G7 BC. A G1 BC is used for flat based bullets. [/QUOTE]
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