Maybe some of you are not blessed with an abundance of local gun shops as we in south-central Pennsylvania are but the number of these "found some powder" threads with mail-order sources cited never ceases to amaze me. It seems that many shooters overlook their local shops and prefer to shop at the "big box" sporting goods stores where so many others do, which results in lightly stocked shelves. Around here, small shops had and still have the inventory at competitive prices.
Back when we were experiencing something of a shortage of some components, I read a thread in which a nearby poster wrote that he was on a waiting list with 1,200 other customers for certain powders. Why would you shop where so many others do when a better alternative is available? And at that same time, three shops I frequent that are also close by for that shooter had that powder on hand.
At that same time, I never was unable to find anything I wanted aside from 22LR ammo and since I maintain a good inventory of most things, I wasn't hurting for that commodity either. Now again, if there aren't a lot of small shops in your area, I'm sorry for your situation and extend my sympathy but if there are some of those shops in your area, I'm willing to bet you might just find what you want there.
Ed