Midway usually has just about everything you will need for ammo or reloading. Oddly in this case they do not list any brass but only loaded rounds at an average painful price of about $125 a box. They have everything else for reloading just no brass.
I just did a quick google search and everywhere shows dicontinued or backordered. I'm sure it's out there you just have to find the right supplier or check some auction sites for once fired brass.
That's a big gun. What are you planning to go hunt with it?
Everyone has different ideas about trophy pictures. Looks around and you will see "long armers," "set behinders," "big cheesers," and "blood covered brutes." I have a few tips to keep your trophy pictures from being laughers or worse yet just plain gross.
#1 Clean it up. Try to avoid bullet holes, gut pile, mass amounts of blood, and the tongue sticking out. You don't want your big buck to look like a angry 1st grader with his tongue out or a MMA fighter during the 3 round.
#2 Long arming...