No no, this does not bypass normal rate of fire restrictions.
This allows you to easily fire uncharged shots of chargable weapons.
Go to your Zandronum configuration .ini file.
Under [Doom.ConsoleAliases], paste this
Command=+attack; wait 1; -attack; wait 1; RapidFireOn
Command=Alias RapidFireOn "RapidFire"; RapidFireOn
Command=Alias RapidFireOn ""
And that's the alias to do it.
Now you need to bind +RFire to a key. (-RFire is connected to the release of +RFire; don't worry about it.)
Start up MM8BDM (or look under [Doom.Bindings]).
Open the console with ~.
bind mouse2 +RFire
Mouse2 is your right click; you can replace that with whatever you like.
Now just hold your turbo button and let the wild coils fly!