Well, there was no information about this stuff on the internet, other than the fact that it is non-corrosive, and aparently prone to squibs. I decided to do some of my own reasearch. This ammo is brass cased and boxer primed (the guy at the store I bought them from said berdan). The bullets are 170 grain. They are both canelured and boat-tailed. They also seemed to be glued into the cases, because there is some black residue on the bullet I pulled out around the crimp. There is 46.5 grains of extruded powder in there. Hopefully this gives some people some insight into this ammo. I haven't shot it yet, but with the notion that they have some firing issues, they might only make good reloading cases.