I'm using Blender 2.8X, because it's good and free: Blender Download
You may download my model here: tutorial_0.zip or build yourself one !
This second model, a simplification of the first, built on it, has been built, for targeting purpose. Also, when the targeting algorithm will calculate the location of each of the triangle, it will have a reduced computing time, because this model has less triangles in itself ! Again, it separate the entire mesh into subentities, this way the program will know wich part is hited par the specific ammo...
This piece of code, is creating a text file, but only with the entire model, so without the BoundingBox, simplified model: