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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Hornady 4DOF Ballistic Program
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<blockquote data-quote="mitch260" data-source="post: 1226577" data-attributes="member: 53720"><p>That's not what was claimed. However, that can definitely be the case, depends on how knowledgeable the people running that 6 figure system are. In a prefect world, maybe, but barely, to the extent that its a moot point really. It is a lot more difficult to derive accurate results from that complex system than the system AB uses. We can attain very accurate data relatively easily and is why we have a large database of very accurate drag curves.</p><p></p><p>But all of that is beside the point. Our data with our system is already pretty much as accurate as with the doppler. The difference, and what is being claimed by Hornady, is that they are getting data from the radar to use in their "4th DOF" which calculates spin drift and aerodynamic jump. This is false because the data required for those calculations can not be derived from the radar data. The AB solver uses dedicated equations that have been repeatedly tested and tuned through live fire testing, but not just shooting over a microphone or radar because that doesn't do anything for these aspects, to calculate spindrift and aerodynamic jump very accurately. Hornady estimates the various coefficients needed for their "4th DOF". So, you have a claimed "more precise" system that is based on estimates. Precision and estimates don't generally go hand in hand. Especially when there are already highly accurate methods being used that don't rely on estimations.</p><p></p><p>Long story short, practically the radar isn't any more accurate than the system AB uses. And it doesn't do anything for Hornady's claims. People need to understand that "6 figure doppler measuring system" is pretty much a marketing phrase and that it isn't real special. It measure the exact same thing we measure with acoustic's, and that's it.</p></blockquote><p></p>
[QUOTE="mitch260, post: 1226577, member: 53720"] That's not what was claimed. However, that can definitely be the case, depends on how knowledgeable the people running that 6 figure system are. In a prefect world, maybe, but barely, to the extent that its a moot point really. It is a lot more difficult to derive accurate results from that complex system than the system AB uses. We can attain very accurate data relatively easily and is why we have a large database of very accurate drag curves. But all of that is beside the point. Our data with our system is already pretty much as accurate as with the doppler. The difference, and what is being claimed by Hornady, is that they are getting data from the radar to use in their "4th DOF" which calculates spin drift and aerodynamic jump. This is false because the data required for those calculations can not be derived from the radar data. The AB solver uses dedicated equations that have been repeatedly tested and tuned through live fire testing, but not just shooting over a microphone or radar because that doesn't do anything for these aspects, to calculate spindrift and aerodynamic jump very accurately. Hornady estimates the various coefficients needed for their "4th DOF". So, you have a claimed "more precise" system that is based on estimates. Precision and estimates don't generally go hand in hand. Especially when there are already highly accurate methods being used that don't rely on estimations. Long story short, practically the radar isn't any more accurate than the system AB uses. And it doesn't do anything for Hornady's claims. People need to understand that "6 figure doppler measuring system" is pretty much a marketing phrase and that it isn't real special. It measure the exact same thing we measure with acoustic's, and that's it. [/QUOTE]
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Hornady 4DOF Ballistic Program
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