5.56MM Duplex

The ammo was intended to be use in one of the project rifles. Obviously it didn’t go anywhere.

The .220 Russian

The 220 Russian isn’t heard of much anymore because it gave birth to something that took the case and turned it into something so good.

Calico M950

This one was one of the more radical ideas for the 1980s and one I handled quite a bit back in the day.