Misfire Chance built into a macro

I have only done a cursory search so far, but it seems like I am gonna have to write a little code to get this done. Basically, what I want to do is add a little something to a firearm attack macro. Like if the result of the d20 roll is in the misfire range, rather than proceeding with the damage roll, display a different result, like "a loud snap emanates from the firearm, something has obviously gone very wrong". Am I just missing something as a FNG with no experience with this system, or is this not possible without making some coding changes?

You aren't missing much. Probably the easiest way to do this is with the API, though you could a custom Roll Template that would show the results of a Rollable Table Roll when the roll is a crit and hide the damage.

Awesome! Thanks! I guess I'll get to work on it tonight :)