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<blockquote data-quote="MMERSS" data-source="post: 790456" data-attributes="member: 63748"><p><span style="font-size: 10px"></span></p><p> <span style="font-size: 10px"></span></p><p><span style="font-size: 10px">I would say MAYBE. One sure check is to fire all of your rounds through a chronograph to verify if you are on the high end, low end or middle of your SD. How can you verify that all three shots at 400 were not on the high end of your SD and at 500 your three shots were not on the low end of your SD without a chronograph? You could also shoot more rounds at each range but sometimes this starts to become counterproductive especially with a short-lived barrel. In this case with a 308 why not if you don't have a chronograph. As time of flight increases understanding the differences in muzzle velocity variation become more and more important with predicting results. During cannon fire I would have the gun crews mount a chronograph to every howitzer. When you encountered ranging errors the chronograph was a great tool to verify muzzle velocity against that particular firing solution. Having a round hanging for at times up to a minute with ranges several thousand meters away leaves you with very little room for controllable error mistakes. The same principles of eliminating controllable errors and understanding what effects those non-controllable errors bring to the table are an important aspect to the long range shooter. If you have the tools available, use them. Many times they will give you the answer and keep your head from banging against the table.</span></p><p><span style="font-size: 10px"></span></p></blockquote><p></p>
[QUOTE="MMERSS, post: 790456, member: 63748"] [SIZE=2] I would say MAYBE. One sure check is to fire all of your rounds through a chronograph to verify if you are on the high end, low end or middle of your SD. How can you verify that all three shots at 400 were not on the high end of your SD and at 500 your three shots were not on the low end of your SD without a chronograph? You could also shoot more rounds at each range but sometimes this starts to become counterproductive especially with a short-lived barrel. In this case with a 308 why not if you don’t have a chronograph. As time of flight increases understanding the differences in muzzle velocity variation become more and more important with predicting results. During cannon fire I would have the gun crews mount a chronograph to every howitzer. When you encountered ranging errors the chronograph was a great tool to verify muzzle velocity against that particular firing solution. Having a round hanging for at times up to a minute with ranges several thousand meters away leaves you with very little room for controllable error mistakes. The same principles of eliminating controllable errors and understanding what effects those non-controllable errors bring to the table are an important aspect to the long range shooter. If you have the tools available, use them. Many times they will give you the answer and keep your head from banging against the table. [/SIZE] [/QUOTE]
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