Does anyone here have a 4 inch cannon and wants some free prototype shells?

[JimmyT]

I recently got a 4 footer of 1 inch allthread rod, and I intend to use it for the good of mankind. (I'm going to be making some big ass sabot rounds because I think they're cool.) Each shell will weigh about 6 pounds and consist of a 2 foot long section of the 1 inch threaded rod. The discarding sabot is 3D printed TPU reinforced with ABS. The reason I'm asking here is because I don't own a 4 inch cannon and I don't have the time to make one. The current design is for 4 inch sch 40 PVC, but if you have a different schedule pipe, I can adjust it easily.

They will fly extremely far compared to potatoes or other low density objects due to their low drag, so if you are up to this, be careful. They'll be done in about a week. I'll ship them at no charge. Thanks.