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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ballistics Programs (Web based & Downloadable)
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<blockquote data-quote="Broz" data-source="post: 937058" data-attributes="member: 7503"><p>I agree, that G7 is a better choice with less change as I indicated in a prior post. Using a wider set of velocity samples from zero to 3500 fps with the same bullet can reveal a G7 BC of a high BC bullet to change of as much as .148. However using the average will get you very close, especially at shorter distances where the velocity spread is less. So I agree a single G7 may well be the best choice. At least for most and all practical purposes. But I have had Bryan Lintz help me in the past as I worked out a set of stepped G7 BC's for a 338 Lapua to 2500 yards from actual recorded field drops that were repeated and believed to be correct. He confirmed my finding to be accurate in his opinion after we tested and eliminated other factors like scope tracking and muzzle velocity. That said he also helped me to average and find a single BC that was very close in relation to what I had recorded for data. </p><p> </p><p>So I am not debating that a single G7 is not the best choice for most all shooters. But what I am saying is true that, once again " G7 does not show as significant of a change as G1" but it does indeed show change with velocity.</p><p> </p><p>Jeff</p></blockquote><p></p>
[QUOTE="Broz, post: 937058, member: 7503"] I agree, that G7 is a better choice with less change as I indicated in a prior post. Using a wider set of velocity samples from zero to 3500 fps with the same bullet can reveal a G7 BC of a high BC bullet to change of as much as .148. However using the average will get you very close, especially at shorter distances where the velocity spread is less. So I agree a single G7 may well be the best choice. At least for most and all practical purposes. But I have had Bryan Lintz help me in the past as I worked out a set of stepped G7 BC's for a 338 Lapua to 2500 yards from actual recorded field drops that were repeated and believed to be correct. He confirmed my finding to be accurate in his opinion after we tested and eliminated other factors like scope tracking and muzzle velocity. That said he also helped me to average and find a single BC that was very close in relation to what I had recorded for data. So I am not debating that a single G7 is not the best choice for most all shooters. But what I am saying is true that, once again " G7 does not show as significant of a change as G1" but it does indeed show change with velocity. Jeff [/QUOTE]
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