This is what civil sim. operators call 'running flat out'.
Session 1: 0600-1000
Session 2: 1015-1415
Session 3: 1430-1830
Session 4: 1845-2245
Session 5: 2300-0300
Maintenance: 0300-0600
....seven days a week, 365 days a year, with the odd scheduled session lost to maintenance if required. (And if the owner of the sim. has unused time, they usually advertise the spare time to other operators, and that spare time [usually those awful back of the clock sessions] is almost always snapped up.)
And the fixed base procedural trainer (which I assume the RAAF has for the C130 and the C17 as well as the full flight simulator), while not usually used 'back of the clock', is similarly heavily booked during heavy training periods, like conversion courses.
So in any given week, any one sim. can handle 35 four hour sim. sessions. I've been involved with sims in three airlines and that's pretty much the way they all do it - because their beancounters rightly see that whatever it might cost to staff and run them, simulators used this way, to maximum capability, save money - lots of it - and deliver productive crews, available to operate when and wherever needed, in minimum time.
If the RAAF's having trouble with long delays in initial training (as they seem to have been for some years now) and with maintaining currency for qualified crew, maybe it's time they took a closer look at the way civil aviation does it.
Simulators have such fidelity today that asymmetric procedures (and for that matter, any emergency procedures) do not need to be (make that should not be) done in the aircraft anymore. If the RAAF didn't know that already, it should have learned that after the loss of the 707 at Sale. (How many years ago was that now?)
Similarly, many of not most specialist categorisation training could be done in the sim. The QFIs won't like it, as it will turn them into vampires - (almost permanent residents of the 'bat cave') - but it's a fact. You also don't need QFIs to do most of this training if it's done in a sim. This again would involve a change of thinking from standard RAAF practice, but again, it's a fact.
It seems to me there should be some ambitious young Wing Commander out there who should ask to be given command of the RAAF's transport sim. program and the wherewithal (=$$$) to turn it into a 24 hour a day, seven days a week operation and he or she would unplug a major bottleneck.