i picked up a sti eagle 6.0 with a unique slide and all the other goodies to make it a 6" edge in essence several months ago. however after several hundred rounds ~ 500 (reloads and factory) later the gun stops shooting. after a quick diagnosing i found the back of the firing pin flattened . upset, i sent it back to the company i bought it from (DP) and had them replace the pin and place a lighter hammer. all is well for a while and at a big match for me it crapped out again! talking to a few other shoots they gave me some hypothesis' for this recurrent nightmare. some said it was a crappy pin in the first place and suggested i get another pin with a beveled end to prevent another incident, another thought it was the small rifle primers in my reloads, but i shot with only factory ammo at this match and put less than 200 of my own loads before hand, others than thought my firing pin spring was the culprit, "too heavy" or "too long". i'm lost, can anybody help me out. this event cause my to drop a stage and ruined my concentration during the second day at the match.