I've been preaching the "buy it now, because the government will ban the importation of steel cased, military caliber ammo" for months and months now. It hasn't happened yet, but it's getting closer. I don't think there'll be any bans on the pistol calibers, or any brass cased domestic ammo, rifle or otherwise. Maybe a big limit on purchase quantities. But I still believe you can kiss the cheaper imported stuff good bye.
This ! There will be a ban on importation of any kind of "scary looking assault weapon" and also most likely on imported Russian ammo. Get it now ! FYI, SGAmmo still has some 7.62 x 39 cheap in 1000 round cases. Get it now though, almost gone. AR 5.56 ammo: Too late.