These custom aluminum turbine slugs are pretty cool.
The folks in this video have some pretty interesting ammunition ideas, and this has to be one of the best.
Here, they demonstrate ballistic gel testing of aluminum .70 caliber shotgun slugs.
This popular YouTube channel has produced some pretty crazy videos. In this video, they rifled the shotgun shell, and the shot still tailed off.
The custom aluminum turbine shotgun slug would do some serious damage. The entry of the shot went in sideways leaving the entry point looking like a mouth.
This video has it all, unique shotgun slugs, slow motion cameras, and ballistics gel!