Having a chance to test  my AK bulgy pistol, that has the 4 piece big cone brake with 30 rounds at midnight, I was pretty impressed, I only got one "fireball" and that was after a pull of about 5 rounds at one time, the most I saw otherwise were some sparks that looked like unburnt powder flying out.

It was either one hot round, or the hider may get overwhelmed by too many shots too quickly, either way, I was damn impressed by the lack of flame coming out of a 10" barrel and 30 rounds as fast as you can pull the trigger, and still hit a stump.