I have learned to keep a brass rod in my range bag. A semiauto can usually be field stripped and the rear of the barrel placed on a firm surface as the bullet is tapped out to the rear. If the cylinder can be opened on a revolver the forcing cone can usually be placed against something firm, like the corner of a work bench or table, etc.
With a revolver firing a squib with primer only and no powder, the bullet frequently sticks in the barrel-cylinder gap, or just beyond into the forcing cone. With a short charge of powder, it can lodge anywhere in the bore, depending upon how much propellant made it into the case, and maybe allowing the cylinder to turn enough to line up the next charge hole and a live round. Bad juju when shooting rapid double action. I have a ringed (but not bulged) M1917 barrel to show for that.
In slow SA fire you can catch this. However in rapid DA fire one CANNOT stop the trigger finger quickly enough to prevent the next round going down the tube. Bang! Bang! Click!!!! Bang! Oops. Elmer Keith wrote about this decades ago, when people still cared about precision, fast, DA shooting.
Now I visually and audibly (my new Dillon 650 has a buzzer to detect a short charge) check to ensure that the powder has indeed gone into the case from my progressive loader's powder measure.