That is correct.
I spoke with a Rep at the SHOT Show and explained our desire for some hardened, plated, and buffered, #1 Buck in a Flight Control Wad.
He stated that there was simply not enough customer interest or demand for that product.
I told him, "How can there be "demand" if you don't offer it?" ;)
He said, "Our product offerings are effected by what the military and law enforcement want, and they want 00 Buckshot."
By the way, I had quite a long discussion with him about the FBI minimum penetration standards and why we want #1 Buck and he was very knoweldgable about the subject. He agreed with everything I said, but then just shrugged and said, "There isn't enough demand."
It's not available because there isn't enough demand, and there isn't enough demand because it is unavailable. :D