And is there anyway to skip that, like copper electroplating.
that is done by some bulk bullet casting companies but the amount of time and labor involved, plus the cost of copper would make it a worse choice. There are some pretty simple lubing methods out there. I recall one where it's basically a liquid lube and you just lay a bunch of bullets on a cooking sheet and put the lube on, roll em back and forth and then stand em up and let em dry. I want to say there was some kind of spray lube for bullets(not case lube) but I can't recall for sure if it worked or not. I really think if your going to the trouble of casting your own bullets it isn't much more effort to use a sizing/lube die. Especially as you are going to need to do the sizing step anyway a lot of the time if you are trying to make truly accurate ammunition.