When you click and drag a particle, ALL particles follows it, which isn't supposed to happen.
Click and drag your file into the projects asset tab. I decided to choose a bubble.
The video above is Without using Noise.
The video above is with Noise added!
Make sure the bullet particle system is selected, select the shape effect in the inspector and then click & drag the tip of this cone.
These "Hit" particles looks like it can work nicely with collision, so we'll add them to a particle system's collision!