From an ammo supplier.....

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SGAmmo is my favorite on-line ammo supplier.  This is what they have posted on their web site..

Welcome to SGAmmo.com

DUE TO HIGH DEMAND WE ARE CURRENTLY SOLD OUT OR RUNNING LOW ON MANY POPULAR ITEMS, BUT WE ARE GOING TO BE RECEIVING SHIPMENTS THROUGH THE WEEK. IF A SOLD OUT PRODUCT IS OF INTEREST THEN YOU CAN SIGN UP FOR AN EMAIL NOTIFICATION ON THE PRODUCT PAGE NEXT TO THE PRICE, THIS WILL SEND YOU AN EMAIL THE INSTANT THE PRODUCT IS BACK IN STOCK. PLEASE KEEP IN MIND THAT A LOT OF THE SHIPMENTS ARE SMALLER LOTS THAN NORMAL AND MAY SELL OUT QUICKLY SO IF YOU GET AN EMAIL THAT SAYS A PRODUCT IS IN STOCK BUT IT STILL SHOWS AS ZERO AVAILABLE THEN IT HAS SOLD OUT AGAIN. AT SGAmmo.com WE ARE WORKING DAY AND NIGHT TO SECURE MORE PRODUCT AS IT BECOMES AVAILABLE. THANK YOU - SGAmmo Staff