Anyone Turn your own bullets?

[JFettig]

I got this crazy idea to turn some of my own solid copper projectiles for special applications, like really light 9mm bullets for rabbit hunting with the 9mm AR.
What I really want to do is make a good .30 cal bullet for a .300 whisper cartridge that actually expands well. I did a lot of looking around, theres a guy in europe who turns his own bullets, he has ribs on the copper ones that stick out. When I look at Barnes bullets the ribs are cut into the bullets.

Any suggestions on diameters, both of the grooves and of the bullet, whether or not to even use grooves?

Barnes pistol bullets do not have the grooves, are they not needed for rifle?

I have a small CNC lathe that I could easily turn these bullets on, so making them isn't really an issue. They should probably be swaged after I turn them though to make the process a little quicker, this way I'd only have to hold .001 or .002 then swage to size, it'll be a little tedious keeping really high tollerances on the lathe without swaging.

Thanks,
Jon