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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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<blockquote data-quote="Jon A" data-source="post: 67708" data-attributes="member: 319"><p>[ QUOTE ]</p><p> What is the difference between a secant and tangent ogive technically speaking? </p><p></p><p>[/ QUOTE ]</p><p>The sides of the tangent ogive are, well, tangent to the body of the bullet. /ubbthreads/images/graemlins/laugh.gif</p><p></p><p>A secant ogive sets the nose of the bullet back so the intersection of the nose and the body forms a tight-radius intersection instead of a smooth transition. Think of it like this:</p><p></p><p>For a tangent ogive, you start with the cylindrical body of the bullet. You begin drawing the nose of the bullet from a point parallel to the top of the cylinder. So it smoothly rounds away from the body.</p><p></p><p>For a secant, you draw the nose from a point set back into the base a ways. Basically so the radius of the ogive isn't parallel with the sides of the bullet when it intersects. </p><p></p><p>Hmm, that may not be more clear than mud. Let me look for a pic....</p></blockquote><p></p>
[QUOTE="Jon A, post: 67708, member: 319"] [ QUOTE ] What is the difference between a secant and tangent ogive technically speaking? [/ QUOTE ] The sides of the tangent ogive are, well, tangent to the body of the bullet. [img]/ubbthreads/images/graemlins/laugh.gif[/img] A secant ogive sets the nose of the bullet back so the intersection of the nose and the body forms a tight-radius intersection instead of a smooth transition. Think of it like this: For a tangent ogive, you start with the cylindrical body of the bullet. You begin drawing the nose of the bullet from a point parallel to the top of the cylinder. So it smoothly rounds away from the body. For a secant, you draw the nose from a point set back into the base a ways. Basically so the radius of the ogive isn't parallel with the sides of the bullet when it intersects. Hmm, that may not be more clear than mud. Let me look for a pic.... [/QUOTE]
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