lapua:
If you want an 'Australian' load, you will find that 80 or 81 gr AR2213 will equate to a 'factory load'. Not sure about the 'short cut' version, but I'm sure you would be perfectly safe starting at 80gr. My Jeffery double regulates perfectly with 81 grains, and is very accurate. No filler is needed.

I use a mixture of BELL and Bertram brass, nothing wrong with current Bertram cases in myy experience, as long as you are prepared to tidy up the flash-holes and neck-size before the first load, which I do routinely with all brands anyway.