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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm VLD analysis
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<blockquote data-quote="Pdvdh" data-source="post: 230882" data-attributes="member: 4191"><p>Wow! I'm using the Berger 168 VLD for LRH and just last weekend I shot at both 300 yds and 990 yds in the effort to establish the field performance BC out of my rifle. I came up with a G1 BC of <strong>0.615</strong> in order to best match my trajectory with a MV = 3080 fps and 990 yd target velocity of ~ 1700 fps, at an elevation of 275'. It look's like your test averaged a G1 BC of <strong>0.617</strong> lb/in2 for that bullet. Probably just a fluke that my BC was so close to the average that you determined. Especially since I only fired two shots @ 990 yds. That was my initial testing out to 900+ yds. I'll tweek my drop chart and shoot again in a confidence building effort to help confirm that my BC is really a close match to my bullet trajectory. </p><p></p><p>Neat stuff. Close to going over my head but appreciate your post and sharing your research. There's quite a few folks using the Bergers for LRH and others will be able to take advantage of your derived BC information also.</p><p></p><p>Paul</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 230882, member: 4191"] Wow! I'm using the Berger 168 VLD for LRH and just last weekend I shot at both 300 yds and 990 yds in the effort to establish the field performance BC out of my rifle. I came up with a G1 BC of [B]0.615[/B] in order to best match my trajectory with a MV = 3080 fps and 990 yd target velocity of ~ 1700 fps, at an elevation of 275'. It look's like your test averaged a G1 BC of [B]0.617[/B] lb/in2 for that bullet. Probably just a fluke that my BC was so close to the average that you determined. Especially since I only fired two shots @ 990 yds. That was my initial testing out to 900+ yds. I'll tweek my drop chart and shoot again in a confidence building effort to help confirm that my BC is really a close match to my bullet trajectory. Neat stuff. Close to going over my head but appreciate your post and sharing your research. There's quite a few folks using the Bergers for LRH and others will be able to take advantage of your derived BC information also. Paul [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm VLD analysis
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