Rapid fire explosive rules, again

[Varyon]

Originally Posted by Ulzgoroth

Yes, I am aware that's the kind of thing people like to make up. Which is why I specifically asked for actual rules answers.

Yeah, I don't think there's anything for this RAW, aside from Hitting the Wrong Target - and as you note, that doesn't quite work for a lot of attacks like this. The adapted Scatter rules suggested above are probably the best we've got for now - but hopefully whatever they've come up with for Mission X handles this as well. While that sounds like it's going to be on a pretty heavily-modified version of the base GURPS system, I suspect the relevant bits won't be too difficult to integrate into mainline GURPS.