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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
280 AI replacement for 270 Win.
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<blockquote data-quote="Pdvdh" data-source="post: 373568" data-attributes="member: 4191"><p>See my post under this thread: <a href="http://www.longrangehunting.com/forums/f19/es-sd-54377/index2.html" target="_blank">http://www.longrangehunting.com/forums/f19/es-sd-54377/index2.html</a></p><p></p><p>Jon A has also posted in the past that he regularly gets single digit delta on the difference in velocities from his two Oehler chronographs.</p><p></p><p>The notion that quality chronographs give readings that vary by 180 fps on a common basis is misleading. If you haven't played with them, you're not is a position to comment on the real-life repeatability of the data they are able to reproduce with high consistency.</p><p></p><p>If you disregard chronograph data, then how do you determine your muzzle velocity for purposes of inputing MV into a ballistics program? Same question for you that I posed in my post under the above referenced thread. Do you try to determine your MV from measured drops? Now that would be a real stretch of the imagination - something that makes chronographs likened to God's gift to the LRH by comparison. </p><p></p><p>If you never hunt other than where you develop your drop chart, you'll be OK with drop charts. If you relocate to hunt in the mountains, you'll have to develop a new drop chart under those environmental conditions prior to engaging game at long range, or else miss.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 373568, member: 4191"] See my post under this thread: [url]http://www.longrangehunting.com/forums/f19/es-sd-54377/index2.html[/url] Jon A has also posted in the past that he regularly gets single digit delta on the difference in velocities from his two Oehler chronographs. The notion that quality chronographs give readings that vary by 180 fps on a common basis is misleading. If you haven't played with them, you're not is a position to comment on the real-life repeatability of the data they are able to reproduce with high consistency. If you disregard chronograph data, then how do you determine your muzzle velocity for purposes of inputing MV into a ballistics program? Same question for you that I posed in my post under the above referenced thread. Do you try to determine your MV from measured drops? Now that would be a real stretch of the imagination - something that makes chronographs likened to God's gift to the LRH by comparison. If you never hunt other than where you develop your drop chart, you'll be OK with drop charts. If you relocate to hunt in the mountains, you'll have to develop a new drop chart under those environmental conditions prior to engaging game at long range, or else miss. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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