I had the same problem with a box of .308 Light Magnums a couple years ago. Two shells out of 20 did not fire. They showed what appeared to be a light firing pin hit. I tried them in a different 308, and they still didn't fire, and still appeared to have a light strike. I assumed they had hard primers, and tossed them. Since I don't want to have that happen in the field, I abandoned Hornady. I have used various other brands in the same gun since, with no problems.
