As someone who kills and gets killed by this -blam!-, I can confirm that simply "moving to the side" doesn't cut it most of the time.
The amount of people I've poped from 90°around corners with this SoB is insane. I swear this thing has better tracking than Truth a lot of the time.
Heck, I still have the clip saved from when I was playing Comp and I shot it at a Hunter who had jumped off the map to avoid my buddy and I literally watched it stop midair and curve down to pop how ass.