I buy bullets from T&T reloading:
http://www.tntreloading.com
They are on the East Coast and show up at all the usual big gun shows, so I order over the phone and pick up at the next show to avoid shipping.
I have about 500 pieces of brass I've found at the range over the years. No one reloads it, it seems, so I get all the brass.
I use Winchester powder, which I buy in bulk for .45ACP as well.
That's the long way of saying I have no idea of how much it costs per round. I use my reloads for range practice, I carry with Fiocchi 60-gr HP loads.
Ken Strayhorn
Hillsborough NC