I have an FNS 9 that failed on me, or I failed it, yesterday. I used various headstamps of brass, 4.2 grains of Titegroup, "blue bullets" cast lead RN polymer coated, OAL 1.113, CCI small pistol primers. If I doulblecharged, the case would overflow, or not seat a bullet with much more than 4.2. could the primer have not been seated fully? I have had some rounds with "bulges" from the bullet being seated. was it the gun or the ammo? I received a small cut on my right thumb, nothing else. I thought if a round were doublecharged I would not have a thumb today. I was doing a "mag dump" firing as fast as I could pull the trigger. I appreciate your thoughts.
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