I was just re-watching part of the Stargate: SG1 pilot, Children of the Gods, and saw something that may just be a production writing issue, but it also got me wondering.
When SG1 is about to be executed, Teal'C says, "Many have said that...But you are the first I believed could do it," then turns and starts to kill his own guards, and helps SG1 and the other prisoners escape (and also kills the other Jaffa guards).
After that, when other guards are running to the prison, O'Neill fires a staff weapon at the barred door/gate to the cell and it apparently fuses the lock so the other guards will have to break in. Then, in the same scene, with less than 30 seconds elapsing, O'Neill turns toward the stone wall and shoots it, creating a small opening, then shoots it again, reating a large opening so everyone can flee through the opening.
Now, normally, I'd consider this a mistake in the writing, but both actions (shooting the lock and shooting the wall) take place on, basically, the same script page, so I'd think it'd be hard for a writer to keep the two actions disassociated in his mind.
Do Jaffa staff weapons have a kind of "1-2 punch" effect like the zats? In other words, does firing a second time at the same target deliver a stronger charge? Or is there something else that would explain why the shot at the cell door just melted the lock and the shot at the wall blasted a hole in it?