I was at the range today shooting my AutoMag3. It fires the .30 carbine round, and I was using a mixture of S&B 110 gr. FMJ, and some old Lake City ball ammo. Sometimes a round would go off that sounded alot hotter than the other ones I fired. This happened about 4 times out of about 100 rounds. I can't tell you which manufactured ammo was causing this because the rounds were all mixed up, and I was just trying to use it up.
Even the outdoor rangemaster noticed the difference, and asked me if I had hand-loaded those rounds, which I hadn't.
Has anybody had this happen to them with factory ammo, or know what could have caused it?
Thanks in advance!
Old Gun Guy