Ok, its not easy but this is what ya have to do. Set up a target the size of a VW bug, then get in your truck and drive 100 yards down range. 100 yards =300ft and that is what you will be shooting around, now shoot and count 1 mississsippi, 2 mississsippi. If it takes 1 second to get there then you are shooting 300 ft per second.

I am not serious, I have no idea how to do it with out a crono. [:-]