I have a few thousand once fired .223 brass taking up space. I had never planned on reloading for my ar's, as ammo is fairly cheap, and I don't shoot them often. But, I have all this brass, I have lead, primers and some powder, and a lot of free time. Plus two boys who would be happy to shoot it all up. So, anybody have any luck with cast in an ar? I would use the Lee 55 grain mold.