I reload, and reloading components have gone up, and primers are nowhere to be found. Powders can be substituted, some are better than others for accuracy,etc, depending on caliber, but they all still go bang. Bullets are still available, especially Hornady bullets. I don't think Hornady has a big contract with the Feds for Ammo. I know Federal and CCI (which are both owned by ATK, who made the solid boosters for the Space Shuttle and solid ICBM rockets). I think ATK also owns Sierra and Lake City. Remington and Winchester, don't know if they have any Fed contracts, but Remington is owned by Cerebus, and Winchester is owned by Fabrique National who also owns Browning. Then there is Spanish Aquilla, and S&B, Privi-partisan, and Nosler which are owned by European companies. Then the Russian companies Wolf and Tula. Some people have found Wolf primers and they say they work ok. Feds can limit imports and probably do. I know to get out of limited imports, FN has built their Winchester factory in South Carolina. Beretta also has a factory in South Carolina to get out of import duties.
There are several reasons.
1) Prepping
2) Government contracts
3) Lots of new gun owners, from what I heard probably 10 million new gun owners and growing every day.
4) Existing gun owners waiting the until things got bad to decide they want an AR, SKS, AK, or other type weapon or pistol, then needing ammo.
5) I know of one guy locally after Sandy Hook, went to the local Gander Mountain and bought 13 AR-15's (all they had in stock) and all their 223 ammo and spend $20,000 cash. Don't know what he is going to do with all that, but he owns several apartment complexes and trailer parks, so he is a wealthy man. Maybe he bought them for family members or for himself.
I've heard primers might be in short supply for about 8 months.
At least I have about 30 lbs of lead I so I can cast bullets, and I have brass which is reuseable until it splits. I also know how to make gun powder. Primers are the hard part.