Summary

The Evil Side of 3D printing :P NOT A TOY

Having fun with Aerodynamics and spin. Its actually a blast. If you wana join the fun one quick tip, .68 caliber is roughly 17.2-17.3 mm. In cad i made them roughly 17.25? maybe some a little bigger to try to get every bit of air behind it, and some may need minor trimming now that i think about it. but if they are reused i bet they will eventually contour to the barrel they are being fired from.

Dont try at home or anywhere
Use at own risk