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Rifles, Reloading, Optics, Equipment
Reloading
Key to low ES on reloading
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<blockquote data-quote="Pdvdh" data-source="post: 1091876" data-attributes="member: 4191"><p>All of your efforts to reduce ES will be wasted if the instrument you use to measure bullet velocity doesn't provide the precision required to measure the ES/SD within the limits you desire. So which brand/model velocity measuring device are you using? And what assurance do you have that the values it records provide the necessary precision?</p><p></p><p>My comment is based in the knowledge I've gained from operating duplicate and triplicate light sensing chronographs for measuring velocity for a number of years now. I currently receive four recorded velocities for each bullet fired. This provides me with the data required to identify bad velocity data from any of the units, because the bullet speed over the skyscreens is the same. When I obtain an outlier from one of the units, I know that unit failed to provide good velocity data. Every one of my units will occasionally produce errant velocity data. </p><p></p><p>Trying to reduce ES/SD based on faulty velocity measurements is equivalent to a dog chasing its tail. A guy can invest a lot of time and resources, and never succeed. Or expressed another way, a guy could succeed, yet be unable to measure/identify/realize that success.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1091876, member: 4191"] All of your efforts to reduce ES will be wasted if the instrument you use to measure bullet velocity doesn't provide the precision required to measure the ES/SD within the limits you desire. So which brand/model velocity measuring device are you using? And what assurance do you have that the values it records provide the necessary precision? My comment is based in the knowledge I've gained from operating duplicate and triplicate light sensing chronographs for measuring velocity for a number of years now. I currently receive four recorded velocities for each bullet fired. This provides me with the data required to identify bad velocity data from any of the units, because the bullet speed over the skyscreens is the same. When I obtain an outlier from one of the units, I know that unit failed to provide good velocity data. Every one of my units will occasionally produce errant velocity data. Trying to reduce ES/SD based on faulty velocity measurements is equivalent to a dog chasing its tail. A guy can invest a lot of time and resources, and never succeed. Or expressed another way, a guy could succeed, yet be unable to measure/identify/realize that success. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Key to low ES on reloading
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