Thank god, the only times I ever shot a squib was in a revolver.
I previously told on this board of the 2nd time I got a squib, which I reconized immediately.
Well, the first time, I aimed the revolver at the 7 Yard target. I pulled the trigger and pop. I see gas come out so everything looks fine. I then look at my target and for some reason have missed a target at 7 Yards. I figure either this gun is terribly innacurate or I've just become a pitiful shot overnight. So, I cock back the hammer for another shot. I pull the trigger and hot gas pours out of the cylinder and engulfs my gun hand. It burned a little, but didn't hurt me. This time, the cylinder won't turn anymore. So, I break it down and discover a bullet stuck halfway in the barrel and slightly out that is blocking the cylinder from turning. I remove that bullet and look down the barrel but can't see through it. So, I take a .38 Cleaning Rod and carefully place it in the barrel to discover an obstruction, my first shot. I hadn't misssed after all. I removed that bullet later on after I got home. I figure the 2nd bullet was pushed far enough that it allowed the gas to safely exit from between the cylinder and barrel.