Besides local or state license required do to zone. On the Federal level there is a ammo manufactuers license. Its like $30 for three years.
Federal Firearms License types<TABLE cellPadding=0 border=0><TBODY><TR><TD width=125>
Type</TD><TD width=125>
Usage</TD></TR><TR><TD width=125>Type 1</TD><TD width=900>Title 1 dealer or gunsmith other than destructive devices. Can also deal in Title II
NFA firearms with class 3 tax stamp.</TD></TR><TR><TD width=125>Type 2</TD><TD width=900>Title 1 dealer doing business as a pawnbroker</TD></TR><TR><TD width=125>Type 3</TD><TD width=900>Licensed collector of Curio & Relic (C&R) firearms</TD></TR><TR><TD width=125>
Type 6</TD><TD width=900>
Licensed manufacturer of ammunition and reloading components other than Armor Piercing ammunition</TD></TR><TR><TD width=125>Type 7</TD><TD width=900>Title 1 manufacturer of firearms, who can also act as dealer, other than Destructive Devices, ammunition and ammunition components other than Armor Piercing ammunition. Can also manufacture & deal in Title II
NFA firearms with class 2 tax stamp.</TD></TR><TR><TD width=125>Type 8</TD><TD width=900>Importer of Title 1 firearms and ammunition. Can also import Title II
NFA firearms with class 1 tax stamp.</TD></TR><TR><TD width=125>Type 9</TD><TD width=900>Dealer in Title 1 firearms including NFA destructive devices, Requires payment as an SOT Class 1 (can act as an NFA Dealer) and registration with the US Dept. of State as a Broker under ITAR/D-TRADE. To deal/broker any DD with an explosives content (i.e. Flash-Bangs), requires an additional FFL; Dealer of High Explosives</TD></TR><TR><TD width=125>Type 10</TD><TD width=900>Manufacturer of Title 1 firearms, ammunition and ammunition components, manufacturer of NFA Destructive Devices, ammunition for Destructive Devices and Armor Piercing ammunition (can act as a dealer). Requires payment as an SOT Class 2 (can act as an NFA Dealer) and registration with the US Dept. of State as a Manufacturer under ITAR/D-TRADE. To manufacture any DD with an explosives content (i.e. Flash-Bangs), requires an additional FFL; Type 20 Manufacturer of High Explosives.</TD></TR><TR><TD width=125>Type 11</TD><TD width=900>Importer of Title 1 firearms, ammunition and NFA Destructive Devices, ammunition for Destructive Devices and Armor Piercing ammunition. Requires payment as an SOT Class 1 and registration with the US Dept. of State as a Broker under ITAR/D-TRADE. To import any DD with an explosives content (i.e. Flash-Bangs), requires an additional FFL; Importer of High Explosives.
</TD></TR></TBODY></TABLE>
http://www.atf.gov/firearms/how-to/become-an-ffl.html
I believe you are legal to reload for someone without a license if
they are part of the operation. IE. operate the press, buys compoments (gives you the brass) etc.
CD