Looks like I was misled by some labeling. One box says Dram Eq and no ounces, the other, ounces but no dram. I had therefore, interpreted they were saying the same thing.
Looks like I was misinterpreting ounces of shot as ounces of powder.
As I said, I am used to feeding my 12 "whatever's cheapest" so have never gotten into this much.
Thank you!