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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Variations in B/C
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<blockquote data-quote="BryanLitz" data-source="post: 1081726" data-attributes="member: 7848"><p>Here's a blog article written specifically to your question: </p><p><a href="http://www.bergerbullets.com/a-better-ballistic-coefficient/" target="_blank">A Better Ballistic Coefficient | By Bryan Litz | Berger Bullets Blog</a></p><p></p><p>My simple explanation of G1 vs. G7 is similar to what you've read above. The practical effect you'll see is that when you look at a bullets G1 BC, it varies a great deal over the range of flight speed from muzzle to the target. The G7 BC has much less variation. As a result, you'll see more error in trajectory predictions using the G1 model for modern bullets. </p><p></p><p>It's also harder to nail down what the G1 BC actually is due to the velocity variation. If you say a bullet has a G1 BC of .500, I have to ask: "at what speed?" If you say a bullet has a G7 BC of .245, I can rest assured this will hold true for the practical range of bullet flight speeds.</p><p></p><p>Take care,</p><p>-Bryan</p></blockquote><p></p>
[QUOTE="BryanLitz, post: 1081726, member: 7848"] Here's a blog article written specifically to your question: [url=http://www.bergerbullets.com/a-better-ballistic-coefficient/]A Better Ballistic Coefficient | By Bryan Litz | Berger Bullets Blog[/url] My simple explanation of G1 vs. G7 is similar to what you've read above. The practical effect you'll see is that when you look at a bullets G1 BC, it varies a great deal over the range of flight speed from muzzle to the target. The G7 BC has much less variation. As a result, you'll see more error in trajectory predictions using the G1 model for modern bullets. It's also harder to nail down what the G1 BC actually is due to the velocity variation. If you say a bullet has a G1 BC of .500, I have to ask: "at what speed?" If you say a bullet has a G7 BC of .245, I can rest assured this will hold true for the practical range of bullet flight speeds. Take care, -Bryan [/QUOTE]
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Variations in B/C
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