Hi all.
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.
But for example if you look at
https://noebulletmolds.com/site/314-152-rn-314466/, 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.
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. (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 could approximate it with a bunch of truncated cone sections, but something cleaner looking would be nicer!
Really scratching my head trying to figure out where this radius is measured FROM, in relation to the bullet surface.
Give me Z-Plane math or tensor calc problems and I can chug through them, but a lack of definitions sorta hamstrings me here.