Back when I used to shoot with our PPC guys, I recall discussions regarding "staging the trigger" for revolver shooters with stock or near stock triggers on the barricade stage. For example, with a stock S&W trigger, the shooter would use the forearm to brace against the barricade, pull the trigger until the second click and hold (stage the trigger) until a good sight picture was obtained, then break the shot. I have no idea if this use of "trigger staging" was local dialect or common terminology.