Several have posted about finding different powders, primers, etc., but many are still unable to find certain references locally. Here's an outfit I was unaware of until this morning. Some of their prices aren't too bad, and they've a variety of kinds of powder and primers in stock, and some of the best prices on some ammo that I've seen lately (well below $0.40/round for 62gr brass cased 5.56mm, for example)

Here's the link for those who may be interested.

https://www.wideners.com