For almost everyone no FFL is required. If you live in say CA or another city/state that has restrictions, then yes.
The trouble is that I live in a place that is terrible for Bitcoin and Terrible for guns. It's not a fun process to obtain one legally, especially if you are interested in handguns or contemporary rifles.
I believe in your case it would need to be shipped to a FFL from the bit of research I've conducted.
I can call a person in your state to verify for you if you'd like.
I know you're extremely busy, but if you do end up finding the time I would appreciate you giving a call to verify what the deal is. I was pretty sure that an FFL was not required for ammunition, but it would make sense in concordance with the rest of the legislation that's been being piled on for the past decade or so. You don't have any "cheap" ($500 or so) rifles that you're trying to unload as well, do you?