Rather than warehousing, it would make more sense to put imported ammo on the market as soon as it hits the loading dock, while the current prices are at historic highs.
True, though it's *possible* that an importer could exceed its usual storage space as the ammo moves to into the pipeline, hence the need for warehousing a portion of the supply. Or at least, it *used* to be possible, back when military armories were selling the older stuff off to generate funds for new hardware and ammo orders.
I'm not sure what's left out there - even the 8mm Mauser is drying up. I take solace in knowing that most of that ammo is now piled in American garages. This nation is now literally a powder keg.