Potato Cannon Projectile

My second "thing", I built this especially for my potato cannon! I can easily get over 140 yds with just rocks! Just imagine how this will fly!! Note: Keep away from children, aim away from face!
I haven't printed this yet because my printer is delayed another week!!! Its shipping on Monday May 11! I'm thinking of printing this first. If anyone has their MakerBot up and running, I invite you to print this to see how it comes out and leave feedback on it so I can improve further designs.