can anyone please tell me what and how this happened. I took my AR-10 to the range yesterday . sighting in my scope @100 I brought some hand loads with me. ALL loaded to Manufacturer Specs. I had some Nosler, some Hornady, Sierra, and Berger bullets ,,, 10 of each. loaded with varying powder charges... All within specs. I loaded my 10 round mag ,, slapped it in , charged the rifle and Click ,,,, nothing .... ejected it ,,small mark on the primer but nothing to indicate it was struck hard. racked another one is and CLICK ,,,,,, again . At this point I dropped the mag , hand loaded one into the chamber and closed the bolt ,, pulled the trigger and BANG , she goes off. Ok from that point i would load the first one by hand ,, then slap the mag in and it seemed to run fine.