I do not think you need worry about Nosler. I used to sell them equipment, and they are a hardy company - very self reliant and smart. The explosion (source still unknown) mostly destroyed office space. The production floor was not badly damaged.
That said, they are out of production for several weeks as the main electrical to the building was destroyed.
I plan on buying all I can, just so I have enough partitions and ballistic tips until they get running.
Funny thing is, this is not an ammo production plant. Mostly bullets, the only powder they used to keep on hand was for testing purposes.