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Hunting
Long Range Hunting & Shooting
Cold temp affecting terminal performance of plastic tipped bullets
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<blockquote data-quote="WalksLikeADeer" data-source="post: 1366021" data-attributes="member: 94603"><p>I agree they are close, but another method that is imaginable and available is to verify trajectories in field conditions. </p><p></p><p>The reason I was saying actual velocities, is to get real numbers from the OP's loads and conditions since we are discussing extreme low temperatures in particular. I was wondering if there may be other factors not accounted for in theory in extreme conditions that actually effect velocities such as the diameter of the bore at -20 degrees or other unaccounted for factors. Either way, it would either verify or bring about question to theory... which is a good thing.</p><p></p><p>Hornady argues that ballistic theory developed years ago is not as accurate it could be based on a bullets actual B.C. changing during flight and not fixed as used in most ballistic calculators, hence their development of the 4DOF calculator. Although the corrections are minor, they are measurable.</p><p></p><p>Regardless, I would not shoot at an Elk from 1000 yds based on theory without verifying trajectory in real life.</p></blockquote><p></p>
[QUOTE="WalksLikeADeer, post: 1366021, member: 94603"] I agree they are close, but another method that is imaginable and available is to verify trajectories in field conditions. The reason I was saying actual velocities, is to get real numbers from the OP's loads and conditions since we are discussing extreme low temperatures in particular. I was wondering if there may be other factors not accounted for in theory in extreme conditions that actually effect velocities such as the diameter of the bore at -20 degrees or other unaccounted for factors. Either way, it would either verify or bring about question to theory... which is a good thing. Hornady argues that ballistic theory developed years ago is not as accurate it could be based on a bullets actual B.C. changing during flight and not fixed as used in most ballistic calculators, hence their development of the 4DOF calculator. Although the corrections are minor, they are measurable. Regardless, I would not shoot at an Elk from 1000 yds based on theory without verifying trajectory in real life. [/QUOTE]
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Cold temp affecting terminal performance of plastic tipped bullets
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