Was putting in some primers In my 7mm rem mag and was surprised with how easy they went in. I can get them to fall out with a small tap on the counter. I double checked I was using magnum large rifle primers so that's not the cause. Assuming I should just use these cases for scrap metal and buy new brass? Any ideas of the cause?

Also would I be able to punch out the primers and reuse them without damaging the primers?