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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Applied Ballistics Mobile app
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<blockquote data-quote="BryanLitz" data-source="post: 652993" data-attributes="member: 7848"><p>bigngreen,</p><p>Yes, AB Mobile takes air density change into account on angled shots. ie; when your bullet is going 'uphill', the air density reduces, and it increases on a look-down shot. Not a big difference, but it's known so it's modeled.</p><p>Likewise the head and tail wind components are modeled along the trajectory. Again, not a big difference, but all the little things add up.</p><p></p><p>SHRTSHTR,</p><p>You're understanding correctly. Custom drag curves are made for specific bullets, not referenced to a standard curve. You can think of it like a stepped BC with like 100 steps to make it match perfectly. This feature is really only a benefit if you're shooting at ranges where your bullet slows below ~1300 fps (transonic range). That's where a bullets' drag curve diverges most from the standards and the benefit of a custom curve is greatest. If you're only shooting in the supersonic range of your trajectory, you probably won't benefit from a custom drag curve.</p><p></p><p>-Bryan</p></blockquote><p></p>
[QUOTE="BryanLitz, post: 652993, member: 7848"] bigngreen, Yes, AB Mobile takes air density change into account on angled shots. ie; when your bullet is going 'uphill', the air density reduces, and it increases on a look-down shot. Not a big difference, but it's known so it's modeled. Likewise the head and tail wind components are modeled along the trajectory. Again, not a big difference, but all the little things add up. SHRTSHTR, You're understanding correctly. Custom drag curves are made for specific bullets, not referenced to a standard curve. You can think of it like a stepped BC with like 100 steps to make it match perfectly. This feature is really only a benefit if you're shooting at ranges where your bullet slows below ~1300 fps (transonic range). That's where a bullets' drag curve diverges most from the standards and the benefit of a custom curve is greatest. If you're only shooting in the supersonic range of your trajectory, you probably won't benefit from a custom drag curve. -Bryan [/QUOTE]
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Applied Ballistics Mobile app
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