Look at them just after the 2nd load. The primer pockets will extend along with the primers can drop out following firing, enter into the fireplace control assembly and trigger your AR to go whole car. I eventually tossed all my federal brass. Its good for 1, two at most https://ricardoamzmv.blogsvirals.com/35996182/helping-the-others-realize-the-advantages-of-223-brass-for-reloading