SuperXJeff has the right idea (I hope). Hodgdens has the sales rights to IMR powders, since they are unable to get the Clays line due to reported production disruption they have only IMR and are probably making it as fast as they can.
Unfortunately they have raised the price on reloaders powders to the point that many of us myself included have switched to Alliant propellants. I was a 700X user but have switched to Promo, most likely will stay with it. Made in USA too, that makes me feel better. Ross Puls