Prayer and fast action. Whenever you get a notification they're in stock, put them in your cart and buy them. Don't try to find powder or other stuff to put in the cart to spread the pain of the HAZMAT and shipping. I've missed out on about 25,000 primers since June because of putting them in the cart (in stock when I did that), but 5-10 minutes later when I go to check out, the primers are out of stock. It's full suck mode on primers right now...