Need some help with an ammo problem... well atleast i hope its just an ammo problem. Just put 200 rounds through my shield (9mm) at the range 100 blazer brass and 100 federal champ... the last box i had several faliures. Pulling the trigger and it goes "click" clear the round and see the primer is being struck but not in the center... the previous 150 rounds went through flawless. I loaded a mag with my self defense ammo and it went through without a hitch. So i didnt fire half of the last box, broke the gun down amd gave it a good cleaning then went back into the range to fire the last 25 rounds to see if the gun being dirty was the issue but still got alot of failures. I was at the range on Thursday and put 150 rounds through it without a problem so im hoping it was just a bad box of ammo... thanks in advance for the help