Tula Neckbeard flippers are buying it all now that you posted this ...lolThere is something going to happen with Tul this Summer. It wasn't tariffs or sanctions, but some kind of change in plant production if I remember. Supposedly Tul production will be limited for June and July.
EDIT: It had to do with the Wold Cup (see below). They can't move dangerous cargo while that's going on...
http://www.thefirearmblog.com/blog/2018/04/19/world-cup-ammo-shortage/