Re: Buying Ammo online.
Only ammo related places I know of that require a copy of your DL is the companies that sell black powder, and they are shipping it to you personally, or your place of business. Places like Powder Inc., Track of the Wolf, and so forth.
In my opinion, dealing with the established suppliers who have been around for quite sometime seems safe enough to me to deal with.
From what I know of my ammo orders delivered by UPS, they do require a signiture for ammo (or powder) delivered to your door, or place of business. I would think that would be a UPS nation wide requirement, not an individual State requirement. It's required here I know that.