Roman Legions were armed with their Short Swords, Spears and used slingshots to throw cast lead balls at their enemies. Guess what? Their lead projectiles were hand cast...the same way most of us still make bullets!
The best casting machine out there is the Master Caster for the individual that casts bullets for himself and maybe a few friends. With a Master Caster one can make better bullets than one can by hand casting after one gets to know how to us the machine. Another benefit is one can cast hundreds of bullets at a time...much, much faster than using a hand mould.
I purchased my first Master Caster in the early 1980's and have been happy with them ever since. One can easily modify Lyman or RCBS bullet moulds to work on a Master Caster. One word of warning...Master Casters will literally "eat aluminum moulds alive" so you can't use aluminum moulds on them.
http://www.magmaengineering.com/master-caster/