Does Starline have the 45 AR in stock? I bought my lot (250) about a year ago, before the most recent drought hit. They did send 500 9mm cases about a week after I ordered them; those landed about 10 days ago. I would just get in line on their back-order list if they aren't in stock.
ETA--The 357 Magnum brass I ordered at the same time I ordered the 9mm arrived today. 20 days from order to delivery, back-ordered. Given the ongoing components & ammo drought, I am quite happy.