The Precision Shooting Software website has a page that contains formulas for calculating the radius of the ogive of a bullet from measurement values of the bullet nose. The Precision Bullet Design Sofware help file has a diagram that might shed a little light on your problem. Give me Z-Plane math or tensor calc problems and I can chug through them, but a lack of definitions sorta hamstrings me here. Really scratching my head trying to figure out where this radius is measured FROM, in relation to the bullet surface. I could approximate it with a bunch of truncated cone sections, but something cleaner looking would be nicer! (Done Tensor Calc, Z plane transforms, tons of calculus of other sorts, this is "just" trig so it should be simple if I had that origin nailed down. I'm pretty good with math, what I need is to be able to get a formula off that that will tell me what the curve is for the boolit's nose, so I can talk my CAD package into approximating it. I have never seen some of the terms used on boolit drawings defined, one of my long term projects is to make models of any case and/or boolit out there, this would allow making snap caps, dummy bullets, lots of good things.īut for example if you look at, what the term "Tangent Ogive Radius 1.57 Nose Diameters" means in term of how you draw that curve, just isn't clicking for me.
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