Question about projectile velocity.

[Baphomet]

I have a question regarding projectile velocity.

I copied this from the .hpp file you can download from the Breathe website.
maxLeadSpeed=50; // max estimated speed km/h

If maxleadspeed is measured in estimated km/h
what is initspeed measured in?

Furthermore what happens if a projectile has an initspeed of 280 for example and it has a maxleadspeed of 80?