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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tangent Ogive VS Secant Ogive
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<blockquote data-quote="SHRTSHTR" data-source="post: 385067" data-attributes="member: 12514"><p>Hello,</p><p> </p><p>Not sure how to explain what it is I'm looking for but will give it my best shot. I would like to reform the tangent Ogive on a 300smk to a Secant ogive. </p><p> </p><p>I believe that the Secant ogive radius is determined by so many calibers multiplied by the diameter of the bullet for a given twist rate. In this case the barrel is a Lilja, 30" 1-10 Twist barrel with a #8 Contour.</p><p> </p><p>I am trying to figure this out, so I can make a form tool or program one of my CNC lathes for this contour. If I can determine the radius needed, I then need the length of the Ogive. For me to program this or make a form tool...I need the length of Ogive, Radius and Bulet diameter.</p><p> </p><p>I know, I know <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite11" alt=":rolleyes:" title="Roll Eyes :rolleyes:" loading="lazy" data-shortname=":rolleyes:" /> this is just a experiment, I am trying to do for myself. I obviously know very little but want to learn. Thanks for looking.</p><p> </p><p>Ray</p></blockquote><p></p>
[QUOTE="SHRTSHTR, post: 385067, member: 12514"] Hello, Not sure how to explain what it is I'm looking for but will give it my best shot. I would like to reform the tangent Ogive on a 300smk to a Secant ogive. I believe that the Secant ogive radius is determined by so many calibers multiplied by the diameter of the bullet for a given twist rate. In this case the barrel is a Lilja, 30" 1-10 Twist barrel with a #8 Contour. I am trying to figure this out, so I can make a form tool or program one of my CNC lathes for this contour. If I can determine the radius needed, I then need the length of the Ogive. For me to program this or make a form tool...I need the length of Ogive, Radius and Bulet diameter. I know, I know :rolleyes: this is just a experiment, I am trying to do for myself. I obviously know very little but want to learn. Thanks for looking. Ray [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Tangent Ogive VS Secant Ogive
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