I want to know how i can figure out how fast my bow shoots. Is there places i can go to find this out?

Or is there a way to do it on paper?

My setup is this:

Hoyt LazerTec (IBO 296 fps)
Vapor Trail strings and cables
MeanV CSS string stopper
Easton ST Epic 400 arrows with Onestringer wraps and Quicspin Speedhunter vanes (100 grain field tips + broadheads)

If theres anyway i can figure this out it would be great, if not then that is ok