I apologize in advance for the stupid question, but where are folks getting their long-term storage grains? Bulk foods section at the supermarket, grainery, online? I've found a few vendors for this stuff online, but I'd prefer to buy in bulk and package myself. I've only been able to find bags of rice at Sam's Club. But I'd like to stock up on wheat and legumes/beans. Thanks!

Someone once told me; "there are no stupid questions, only stupid people that think they know everything". If you don't know something, the only way to learn is to ask questions.

We get our grains (to supplement what we grow) from a "feed and tack" store. In case you're not familiar, tack is horse related supplies. Wheat, corn and soybean are $10.00 for a 50lb sack. Barley is $13 a sack.
Keep in mind, when you get grain from a feed store it isn't the nice clean grain you would get in #10 cans from an emergency supplies outlet. There will be bits of straw and maybe a few dead bugs in it. I have a 1'x2' screen bottomed tray that I pour some of the grain into, toss it in the air to let the wind carry the chaff away and then pick any dead bugs out by hand. Then it gets packed into the buckets with some diatomaceous earth to kill any insects that hatch from the ever present eggs that you can't see. http://www.earthworkshealth.com/products.php?gclid=CLvK_f-nt6ACFd1L5QoduHOkVw
Yes, it takes time to clean it. But at that price, I'm OK with it.
Hope this helps.

_________________
And To The Republic For Which It Used To Stand

Good tips...I wondered if anyone had good luck with the feed/grain type places. I have a 10 lb. bag of DE that I've already started using for some things, and I plan on mixing it with my grains too. I was reading somewhere that even the #10 cans of packed grains typically have a few insects in them, since there is no way to completely remove them.