Stampedes due to a gun being fired in the middle of a crowd are not fun to watch. Terrorists aren't out to do such things though; surprisingly, they have other goals than causing random terror. Psychopaths on the other hand...

Exactly. Terrorists trying to fight a war with flying .22s would be pathetic. They would never get even 1 shot in before the thing is taken down. I think a few people downvoting me and/or posting about the threat these things might cause don't really understand the state of this technology and/or basic physics.

We weren't talking about psychopaths. Everything is a threat in the hands of a psychopath. Give a psychopath a spoon and I'd still be worried.

The definition of terrorist seems to have shifted. It used to refer to someone intent on fomenting terror in a population, but you seem to be using it to talk about soldiers in a combat situation.

You answer your own question with "It used to refer to...". But even so, I still don't think a flying .22 will cause "terror". Planes crashing into buildings in big cities and killing 3000 people causes "terror".