I had a guy contact me yesterday after his 22 cricket misfired on him with not as bad of injuries as my sons, still the info needs to be passed along. He was beside the vent hole assisting his child shoot the gun. The only sure thing that I can tell from the two incidents are that we were both using remington bulk ammo. The cheap stuff that most buy when taking a child shooting. Also for the defense of the gun manufactor,the vent hole done its job.For those who are not familiar with what I'm talking about you can look at my report from last year to catch you up.