When you say hunting bullets, what exactly are you referring to? Handgun hunting, high vel rifle, low vel rifle, etc.? That'll determine whether you can get away with tumble lubing or need to apply "real" lube.
A) Nothing says you can't tumble lube a grooved bullet.
B) A lubri-sizer is almost essential IMO. I never cared much for tumble lubing, and I don't give a fig about powder coating. I average around 100-200/hour, depending on size (.22's are trickier to handle with bunged up fingers) and whether gas checks are involved (plain base bullets go quicker, obviously).
Just one man's opinion.
