I've seen some conflicting discussion here on this topic. I read the law and there does not seem to be anything on the sale of components like primers, powders, etc.
Then, I read here that the ATF has classified these as ammo and, therefor, they will need a background check for purchase which means they cannot be shipped to your home unless you are an FFL.
Some non-NY big box sellers stopped shipping these. Others stopped and then started up again?
So, what gives?