Why on Earth would you ask that of a bunch of stiffs on a gun forum? I'm sure the BATF would be happy to answer the Federal questions about interstate commerce with respect to ammunition, and your own State should have information about running an internet business.
Good Luck and I for one hope to see you successful and advertising your wares here, my local sporting goods shops ammo shelves look like those in a Moscow bakery!!
People get the government they deserve.