Depends on the bullet, the cartridge and the weapon that fired it, see related link.
Some examples:
rilly fast
as fast as waliur and leyla (love)
You would have to be superhuman fast.
It sold out as fast as a speding bullet :)
the highest speed a bullet can reach is 1500m/s
it was fast
because the recoil is when the bullet forces the gun back and so the bullet creates the recoil and so it can't make it go just as fast
360 mph
smile
a similie ;)
really fast
as fast as chuck norris' fist duhhh