I think that there will be a run on everything, similar to 2012, as we approach the next presidential election.
That run will get better or worse depending on how that election seems to be going.
I am stocking up on every full capacity magazine I think I may ever need. I see these as the lowest hanging fruit, and very likely to be banned or restricted first.
While the ammo might get expensive / scarce for a while, I don't see it getting legislated or restricted before full capacity magazines / 'assault weapons.'
I would recommend making a list of what guns and calibers are important to you, deciding what you want for them, and assigning priority based on the information available now.
I have some AK's, so I've prioritized getting my supply of 7.62 and 5.45 ammo now, since essentially all of the reasonably priced ammo for those calibers is imported, therefore more precarious. I have also put these on top of my list for acquiring the magazines I want for the same reason; the supply of 'milsurp' magazines is imported, and much more likely to be affected.
When my eastern Bloc stuff is where I want it, I will move down the list, and start getting some more 5.56 ammo and AR15 magazines.
I always buy primers when I see a good deal, too; the S&B from Cabelas for $20/1000 is impossible for me to pass up.
It would drive me crazy thinking of all the things I MIGHT need, or MIGHT get banned; that is why, for me, sitting down and prioritizing was helpful; kept me sane and focused.
