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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
swift scirocco II 6.5 cal. 130gr.
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<blockquote data-quote="Edd" data-source="post: 1280894" data-attributes="member: 30592"><p>This is what Bryan Litz said about it.........</p><p></p><p>I measured a G1 BC of .491 for that bullet. G7 BC is .251.</p><p></p><p>It's got a decent ogive design, but a poor (short and steep) boat tail for base drag reduction. Certainly not a design that could possibly produce a .571 average G1 BC. Even at 3000 fps, the G1 BC is just .515, degrading to .453 at 1500 fps.</p><p></p><p>None of my analysis included group shooting (precision) testing so I can't comment on that. They may be extremely precise, but the BC claim is not accurate.</p></blockquote><p></p>
[QUOTE="Edd, post: 1280894, member: 30592"] This is what Bryan Litz said about it......... I measured a G1 BC of .491 for that bullet. G7 BC is .251. It's got a decent ogive design, but a poor (short and steep) boat tail for base drag reduction. Certainly not a design that could possibly produce a .571 average G1 BC. Even at 3000 fps, the G1 BC is just .515, degrading to .453 at 1500 fps. None of my analysis included group shooting (precision) testing so I can't comment on that. They may be extremely precise, but the BC claim is not accurate. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
swift scirocco II 6.5 cal. 130gr.
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