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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Litz BC for Hornady ELDX
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<blockquote data-quote="dfanonymous" data-source="post: 2257612" data-attributes="member: 97050"><p>It's not confusion. It's all correct. The BC is based on form factor and a standard velocity. It's anyones guess what the "standard" velocity is but they need to use a standard to give the BC of a bullet that is capable of going into short action and long action cartridges when selling just the projectile. For factory anmo, the BC is given for the cartridge/ projectile combo, obviously, and is based of the test barrel data.</p><p></p><p>Litz information is just corrected g7 profiles, but you'll notice on applied ballistics the other profiles that have the same grain and model projectile that are different. These are from the AB booth where they run radar for specific rifles. Because most data is like the hornady info above…averages over series of velocity spans, that doesn't always work with everyone's rig.</p><p></p><p>The correct way to choose a BC is to use ALL the BC's. All three mach speeds organized for dope in its respective category of range groups. However, you can circumvent that by using a custom drag model instead.</p><p></p><p>Sure you can just use one BC, and I'm sure the internet has "been doing it for years" and "is just at as good as," "never had a problem" etc.</p><p>To that crowd, you do you.</p></blockquote><p></p>
[QUOTE="dfanonymous, post: 2257612, member: 97050"] It’s not confusion. It’s all correct. The BC is based on form factor and a standard velocity. It’s anyones guess what the “standard” velocity is but they need to use a standard to give the BC of a bullet that is capable of going into short action and long action cartridges when selling just the projectile. For factory anmo, the BC is given for the cartridge/ projectile combo, obviously, and is based of the test barrel data. Litz information is just corrected g7 profiles, but you’ll notice on applied ballistics the other profiles that have the same grain and model projectile that are different. These are from the AB booth where they run radar for specific rifles. Because most data is like the hornady info above…averages over series of velocity spans, that doesn’t always work with everyone’s rig. The correct way to choose a BC is to use ALL the BC’s. All three mach speeds organized for dope in its respective category of range groups. However, you can circumvent that by using a custom drag model instead. Sure you can just use one BC, and I’m sure the internet has “been doing it for years” and “is just at as good as,” “never had a problem” etc. To that crowd, you do you. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Litz BC for Hornady ELDX
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