You're going to want to use dt (delta time) for your reloading events.
Here's a simple way to go about it;
add dt to reload
Reload = 1
plane shoot bullet
set reload to 0
With this, you'll shoot every 1 second. You can change it to 1.5,
and then you can shoot every second and a half.
You can read more on deltatime here.Intrepid2012-03-21 22:32:07