Online
Think it'd be more accurate to say you're basically duck hunting with a crossbow
This is an experiment you can actually do in the real world.
Get a drone, put a 3d shell of a dragon around it that's to scale as if your crossbow was a Scorpion. If the drone gets to within X feet of you, you're dead. Get fifty of your friends together and see if anyone can hit the dragon.
My guess is that unless you all get shellacked, that dragon's going to be full of holes ten times out of ten.