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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New 150 matrix test
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<blockquote data-quote="Pdvdh" data-source="post: 957316" data-attributes="member: 4191"><p>Rich,</p><p>I'm getting a G7 BC value of 0.322, referenced to the ICAO Standard Atmosphere, which is the BC reference Berger, Nosler, and Lapua use to rate their bullet BC values. ICAO Standard Atmosphere conditions are 29.92 in/Hg atmospheric pressure, 59F, 0% RH.</p><p></p><p>If your rifle was sighted in at 100 yds under 27.48 Inches/Hg atmospheric pressure and at 53F, I still calculate a G7 BC value of 0.322.</p><p></p><p>This BC determination was determined using Patagonia Ballistics ColdBore 1.0 ballistics software. It includes an allowance for an 11:00 wind at 10mph. Only thing I didn't include was coriolis, since I didn't know your direction of fire.</p><p></p><p>Think I did it right.</p><p></p><p>Paul</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 957316, member: 4191"] Rich, I'm getting a G7 BC value of 0.322, referenced to the ICAO Standard Atmosphere, which is the BC reference Berger, Nosler, and Lapua use to rate their bullet BC values. ICAO Standard Atmosphere conditions are 29.92 in/Hg atmospheric pressure, 59F, 0% RH. If your rifle was sighted in at 100 yds under 27.48 Inches/Hg atmospheric pressure and at 53F, I still calculate a G7 BC value of 0.322. This BC determination was determined using Patagonia Ballistics ColdBore 1.0 ballistics software. It includes an allowance for an 11:00 wind at 10mph. Only thing I didn't include was coriolis, since I didn't know your direction of fire. Think I did it right. Paul [/QUOTE]
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New 150 matrix test
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