You can get a lot of them in there, and this is how I do it - here's a tutorial I did on Wetcanvas! a while back:
http://www.wetcanvas.com/forums/showthread.php?t=251133
I've changed a few things since then, esp. after I was having trouble with some of the transparent frits. For better protection against little marks, I cut up small pieces (about 2x3") of fiber blanket, and separated them so they were a thinner layer. I used these to separate the beads in layers over on the side when they come off the rack.
Then, here recently, another problem came up - some were sticking to the blanket or getting marks on them from leaning up against the kiln wall. I figured out that maybe my kiln is running hotter than it says on the controller. This is a common problem from what I've read. So I adjusted my kiln down 10 degrees (did that twice), and the problem is solved. Instead of garaging all day at 968, I go with 950 and then ramp up to 968 for 45 minutes to anneal.