I started saving my 5.56 casings. That's going to be my next project, after I'm done with 308 win and 6.5 creed. In the 6mm forum, looking at the primer test. I saw how similar, the cheap, Winchester LR, is at igniting/burning to the more expensive Federal 210M. To my surprise, I seen many people recommending CCI primers, and in the test, it look a lot less powerful ,than the Federal and the Winchester. I have 1k of the CCI and 200 Winchester LR. I hope the CCI perform better that it look on the Pic.