Ive never seen nor heard of an RAN ship do a ammunition at sea with success or sirius, or any other replenishment vessel in the last 5 years, and do i expect to do so. All RAN vessels do an ammunition for years supply, and only top up if conducting operations(MEAO, SEADetc) and any extra systems test, ie combat systems trials.
Since Sirius and success cannot deploy operationally in any context other then war, and even then thats debatable, dry stores is not a concern of the Australian station. Refuelling is the only thing we would require, although a small allowance for stores does come in handy during excercises with foreign navies, namely USN as they do a lot more time at sea then us, but 9/10 they have their own replenishment vessel within the region they operate.
Noting how big a lewis & clarke is, that can be scratched off any ideas. its a waste of space if we have something that big, for a navy our size. Its bad enough having issues with success, but noting the size of a L&C it would be harder for maintaining as we struggle with out vessels as is, with adding 30% size to our largest now. our priority and requirement is fuel, and the L&C is mostly stores variants, as they have 3 heavy jackstay points to two refuel probes. The RAN is moving away from jackstays and more towards helo resupply as its a more simple operation. Ive been part of 3 HJ and they were only conducted for annual requirment, or lack of helo.