mis firing question
my father in law has loaded thousands of shells and has never had the problem he had last weekend. He loaded 50 Rem 6mm (brand new remington cases) and approx 1/2 of them didnt fire. the primer had an indent in it, but not enough to fire the primer. any ideas on what could have happened as it is worrying him a bit. our thoughts, bad primers? or is it possible to seat the primer to deep? it appeared that maybe some of the primers were seated a little deeper than others? any help would be appreciated.